Donald J. Trump v. Deutsche Bank AG ( 2019 )


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  • 19-1540-cv
    Donald J. Trump v. Deutsche Bank AG
    UNITED STATES COURT OF APPEALS
    FOR THE SECOND CIRCUIT
    August Term 2019
    Argued: August 23, 2019                        Decided: December 3, 2019
    Docket No. 19‐1540‐cv
    ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐
    DONALD J. TRUMP, DONALD J. TRUMP, JR., ERIC
    TRUMP, IVANKA TRUMP, DONALD J. TRUMP
    REVOCABLE TRUST, TRUMP ORGANIZATION, INC.,
    TRUMP ORGANIZATION LLC, DJT HOLDINGS LLC,
    DJT HOLDINGS MANAGING MEMBER LLC, TRUMP
    ACQUISITION LLC, TRUMP ACQUISITION, CORP.,
    Plaintiffs ‐ Appellants,
    v.
    DEUTSCHE BANK AG, CAPITAL ONE FINANCIAL
    CORPORATION,
    Defendants ‐ Appellees,
    COMMITTEE ON FINANCIAL SERVICES OF THE
    UNITED STATES HOUSE OF REPRESENTATIVES,
    PERMANENT SELECT COMMITTEE ON
    INTELLIGENCE OF THE UNITED STATES HOUSE
    OF REPRESENTATIVES,
    Intervenor Defendants ‐ Appellees.
    ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐
    Before: NEWMAN, HALL, and LIVINGSTON, Circuit Judges.
    Expedited interlocutory appeal from the May 22, 2019, order of the District
    Court for the Southern District of New York (Edgardo Ramos, District Judge)
    denying Plaintiffs‐Appellants’ motion for a preliminary injunction to prevent the
    Defendants‐Appellees’ compliance with subpoenas issued to them by the
    Intervenor Defendants‐Appellees and denying Plaintiffs‐Appellants’ motion for a
    stay pending appeal.
    Affirmed in substantial part and remanded in part. Judge Livingston
    concurs in part and dissents in part with a separate opinion.
    Patrick Strawbridge, Consovoy McCarthy PLLC,
    Boston, MA (William S. Consovoy,
    Cameron T. Norris, Consovoy McCarthy
    PLLC, Arlington, VA, Marc Lee Mukasey,
    Mukasey Frenchman & Sklaroff LLP, New
    York, NY, on the brief), for Plaintiffs‐
    Appellants Donald J. Trump, Donald J.
    Trump, Jr., Eric Trump, Ivanka Trump,
    Donald J. Trump Revocable Trust, Trump
    Organization, Inc., Trump Organization
    LLC, DJT Holdings LLC, DJT Holdings
    Managing Member LLC, Trump Acquisition
    LLC, Trump Acquisition, Corp.
    Douglas N. Letter, General Counsel, U.S. House of
    Representatives, Washington, D.C. (Todd B.
    Tatelman, Dep. General Counsel, Megan
    2
    Barbero, Josephine Morse, Assoc. General
    Counsel, Office of General Counsel, U.S.
    House of Representatives, Washington,
    D.C., on the brief), for Intervenor Defendants‐
    Appellees Committee on Financial Services
    and Permanent Select Committee on
    Intelligence of the United States House of
    Representatives.
    Parvin D. Moyne, Akin Gump Strauss Hauer &
    Feld LLP, New York, NY (Thomas C.
    Moyer, Raphael A. Prober, Steven R. Ross,
    Akin Gump Strauss Hauer & Feld LLP,
    Washington, D.C.), for Defendant‐Appellee
    Deutsche Bank AG.
    James A. Murphy, Murphy & McGonigle, PC,
    New York, NY (Steven D. Feldman, Murphy
    & McGonigle, PC, New York, NY), for
    Defendant‐Appellee Capital One Financial
    Corporation.
    (Dennis Fan, Mark R. Freeman, Scott R. McIntosh,
    Appellate Staff Attys., Joseph H. Hunt, Asst.
    Atty. General, Hashim M. Mooppan, Dep.
    Asst. Atty. General, Civil Division, U.S.
    Dept. of Justice, Washington, D.C., for
    amicus curiae United States of America.)
    (Brianne J. Gorod, Elizabeth B. Wydra, Brian R.
    Frazelle, Ashwin P. Phatak, Constitutional
    Accountability Center, Washington, D.C.,
    for amicus curiae Constitutional Accountability
    Center, in support of Intervenor Defendants‐
    Appellees.)
    3
    JON O. NEWMAN, Circuit Judge:
    This appeal raises an important issue concerning the investigative authority
    of two committees of the United States House of Representatives and the
    protection of privacy due the President of the United States suing in his individual,
    not official, capacity with respect to financial records. The specific issue is the
    lawfulness of three subpoenas issued by the House Committee on Financial
    Services and the House Permanent Select Committee on Intelligence (collectively,
    “Committees” or “Intervenors”) to two banks, Deutsche Bank AG and Capital One
    Financial Corporation (“Capital One”) (collectively, “Banks”). The subpoenas
    issued by each of the Committees to Deutsche Bank (“Deutsche Bank Subpoenas”)
    seek identical records of President Donald J. Trump (“Lead Plaintiff”), members
    of his family, The Trump Organization, Inc. (“Trump Organization”), and several
    affiliated entities (collectively, “Plaintiffs” or “Appellants”). The subpoena issued
    by the Committee on Financial Services to Capital One (“Capital One Subpoena”)
    seeks records of the Trump Organization and several affiliated entities. The
    Capital One Subpoena does not list the Lead Plaintiff or members of his family by
    name, but might seek their records in the event they are a principal, director,
    shareholder, or officer of any of the listed entities.
    4
    The issue of the lawfulness of the three subpoenas arises on an expedited
    interlocutory appeal from the May 22, 2019, Order of the District Court for the
    Southern District of New York (Edgardo Ramos, District Judge) (“Order”) denying
    Plaintiffs’ motion for a preliminary injunction to prevent the Banks’ compliance
    with the subpoenas and denying Plaintiffs’ motion for a stay pending appeal.
    We affirm the Order in substantial part to the extent that it denied a
    preliminary injunction and order prompt compliance with the subpoenas, except
    that the case is remanded to a limited extent for implementation of the procedure
    set forth in this opinion concerning the nondisclosure of sensitive personal
    information and a limited opportunity for Appellants to object to disclosure of
    other specific documents within the coverage of those paragraphs of the Deutsche
    Bank Subpoenas listed in this opinion. We dismiss as moot the appeal from the
    Order to the extent that it denied a stay pending appeal because the Committees
    agreed not to require compliance with the subpoenas pending the appeal, once the
    appeal was expedited.
    In her partial dissent, Judge Livingston prefers a total remand of the case for
    “creation of a record that is sufficient more closely to examine the serious
    questions that the Plaintiffs have raised,” Part Diss. Op. at 10‒11, and to “afford
    5
    the parties an opportunity to negotiate,” id. at 11. We discuss at pages 69‒72 of this
    opinion not only why such a remand is not warranted but why it would also run
    counter to the instruction the Supreme Court has given to courts considering
    attempts to have the Judicial Branch interfere with a lawful exercise of the
    congressional authority of the Legislative Branch.
    Background
    The subpoenas. The case concerns three subpoenas issued by committees of
    the United States House of Representatives. On April 11 of this year, the
    Committee on Financial Services and the Permanent Select Committee on
    Intelligence each issued identical subpoenas to Deutsche Bank, seeking a broad
    range of financial records of Donald J. Trump, members of his family, and
    affiliated entities. On the same date, the Committee on Financial Services issued a
    subpoena of narrower scope to Capital One Financial Corporation.1 We detail the
    scope of the subpoenas in Part II(C).
    Litigation procedure. On April 29, Donald J. Trump, his three oldest children,
    the Trump Organization, and six entities affiliated with either the Lead Plaintiff or
    The subpoenas issued by the Committee on Financial Services are not dated, but we were
    1
    informed at oral argument that they were issued on April 11.
    6
    the Trump Organization2 filed a complaint in the District Court seeking a
    declaratory judgment that the subpoenas are invalid and an injunction “quashing”
    the subpoenas and enjoining compliance with them.3 On May 3, the Plaintiffs filed
    a motion for a preliminary injunction,4 and the District Court granted the
    Committees’ joint motion to intervene.5 The Plaintiffs and the Committees then
    agreed to an expedited briefing schedule for the motion for a preliminary
    injunction.6 Deutsche Bank notified the District Court that it took no position on
    the Plaintiffs’ request for limited expedited discovery,7 and Capital One notified
    the District Court that it took no position on the Plaintiffs’ request for an order
    requiring the Committees to provide Plaintiffs with copies of the subpoenas.8
    On May 22, the District Court held a hearing on the Plaintiffs’ motion for a
    preliminary injunction and denied it, reading into the record an extensive
    opinion.9 On May 24, the Plaintiffs filed a notice of an interlocutory appeal. On
    2 They are Donald J. Trump Revocable Trust, Trump Organization LLC, DJT Holdings
    LLC, DJT Holdings Managing Member LLC, Trump Acquisition LLC, and Trump Acquisition,
    Corp.
    3 Trump v. Deutsche Bank, No. 19‐cv‐3826 (S.D.N.Y. 2019), Dkt. No. 1 (Apr. 29, 2019).
    4 Id., Dkt. No. 26 (May 3, 2019).
    5
    Id., Dkt. No. 31 (May 3, 2019).
    6
    Id., Dkt. No. 21 (May 1, 2019).
    7
    Id., Dkt. No. 38 (May 7, 2019).
    8
    Id., Dkt. No. 40 (May 7, 2019).
    9 Id., Dkt. No. 59 (May 22, 2019).
    7
    May 25, the parties submitted a joint motion to stay proceedings in the District
    Court pending the appeal,10 which the District Court granted on May 28.11
    On May 25, the parties jointly moved in this Court for an expedited appeal,12
    which was granted on May 31.13 Thereafter, the Banks informed us that they take
    no position with respect to the appeal.14 Nevertheless, we requested counsel for
    the Banks to attend the oral argument to be available to respond to any questions
    the panel might have.15 We requested the Committees to provide unredacted
    copies of the Deutsche Bank subpoenas, which we have received under seal. We
    also inquired of the United States Solicitor General whether the United States
    would like to submit its view on the issues raised on this appeal.16 On August 19,
    the United States submitted a brief as amicus curiae, urging reversal of the District
    10  Id., Dkt. No. 61 (May 25, 2019).
    11  Id., Dkt. No. 62 (May 28, 2019).
    12 Trump v. Deutsche Bank, No. 19‐1540 (2d Cir. 2019), Dkt. No. 5 (May 25, 2019).
    13 Id., Dkt. No. 8 (May 31, 2019). In the parties’ joint motion to expedite the appeal, the
    Committees agreed that if the appeal were expedited, they would suspend compliance with the
    subpoenas during the pendency of the appeal “except to the extent the subpoenas call for the
    production of documents unrelated to any person or entity affiliated with Plaintiff‐Appellants.”
    J. Mot. to Expedite at 2, id., Dkt. No. 5 (May 25, 2019). Granting the motion to expedite the appeal
    has therefore rendered moot the appeal from the District Court’s order to the extent that it denied
    a stay pending appeal.
    14
    Id., Dkt. Nos. 66 (July 11, 2019), 71 (July 12, 2019).
    15
    Id., Dkt. No. 81 (July 17, 2019).
    16
    Id., Dkt. No. 80 (July 17, 2019).
    8
    Court’s order denying a preliminary injunction,17 to which the Committees and
    Appellants responded on August 21.18 On August 23, we heard oral argument.
    The oral argument precipitated letters from the parties to this Court
    concerning tax returns sought pursuant to the subpoenas. These letters and
    subsequent procedural developments are discussed in Part II(B).
    Discussion
    We emphasize at the outset that the issues raised by this litigation do not
    concern a dispute between the Legislative and Executive Branches. As to such a
    dispute, as occurs where the Justice Department, suing on behalf of the United
    States, seeks an injunction to prevent a third party from responding to a
    congressional committee’s subpoena seeking documents of a department or
    agency of the Executive Branch, see, e.g., United States v. AT&T, 
    567 F.2d 121
    , 122
    (D.C. Cir. 1977) (“AT&T II”), the Judicial Branch proceeds with caution, see 
    id. at 123
     (seeking to “avoid a resolution that might disturb the balance of power
    between the two branches”), sometimes encountering issues of justiciability in
    advance of the merits, see United States v. AT&T, 
    551 F.2d 384
    , 390 (D.C. Cir. 1976)
    (“AT&T I”). Although the challenged subpoenas seek financial records of the
    17
    
    Id.,
     Dkt. No. 143 (Aug. 19, 2019).
    18
    
    Id.,
     Dkt. Nos. 148, 149 (Aug. 21, 2019).
    9
    person who is the President, no documents are sought reflecting any actions taken
    by Donald J. Trump acting in his official capacity as President. Indeed, the
    Complaint explicitly states that “President Trump brings this suit solely in his
    capacity as a private citizen.” Complaint ¶ 13. Appellants underscore this point by
    declining in this Court to assert as barriers to compliance with the subpoenas any
    privilege that might be available to the President in his official capacity, such as
    executive privilege. See Franchise Tax Board v. Hyatt, 
    139 S. Ct. 1485
    , 1499 (2019)
    (citing United States v. Nixon, 
    418 U.S. 683
    , 705‒06 (1974)). The protection sought is
    the protection from compelled disclosure alleged to be beyond the constitutional
    authority of the Committees, a protection that, if validly asserted, would be
    available to any private individual. See Barenblatt v. United States, 
    360 U.S. 109
    (1959); Watkins v. United States, 
    354 U.S. 178
     (1957). For this reason, in the
    remainder of this opinion we will refer to President Trump as the “Lead Plaintiff”;
    the formal title “President Trump” might mislead some to think that his official
    records are sought, and the locution “Mr. Trump,” sometimes used in this
    litigation, might seem to some disrespectful.
    Also at the outset, we note that there is no dispute that Plaintiffs had
    standing in the District Court to challenge the lawfulness of the Committees’
    10
    subpoenas by seeking injunctive relief against the Banks as custodians of the
    documents. See United States Servicemen’s Fund v. Eastland, 
    488 F.2d 1252
    , 1260
    (D.C. Cir. 1973) (“[T]he plaintiffs have no alternative means to vindicate their
    rights.”) (italics omitted), rev’d on other grounds without questioning plaintiffs’
    standing, 
    421 U.S. 491
     (1975).
    We review denial of a preliminary injunction for abuse of discretion, see, e.g.,
    Ragbir v. Homan, 
    923 F.3d 53
    , 62 (2d Cir. 2019), but our review is appropriately
    more exacting where the action sought to be enjoined concerns the President, even
    though he is suing in his individual, not official, capacity, in view of “‘[t]he high
    respect that is owed to the office of the Chief Executive’” that “‘should inform the
    conduct of [an] entire proceeding,’” Cheney v. United States District Court, 
    542 U.S. 367
    , 385 (2004) (first brackets in original) (quoting Clinton v. Jones, 
    520 U.S. 681
    , 707
    (1997)).
    I. Preliminary Injunction Standard
    In this Circuit, we have repeatedly said that district courts may grant a
    preliminary injunction where a plaintiff demonstrates irreparable harm and meets
    either of two standards: “(a) a likelihood of success on the merits, or (b) sufficiently
    serious questions going to the merits to make them a fair ground for litigation, and
    11
    a balance of hardships tipping decidedly in the movant’s favor.”19 Kelly v.
    Honeywell International, Inc., 
    933 F.3d 173
    , 184 (2d Cir. 2019) (quotation marks
    19 The first component of the “serious‐questions” standard has sometimes been phrased
    as requiring a party seeking a preliminary injunction to show “sufficiently serious questions
    going to the merits of its claims to make them fair ground for litigation.” Otoe‐Missouria Tribe of
    Indians v. New York State Dep’t of Financial Services, 
    769 F.3d 105
    , 110 (2d Cir. 2014). That
    formulation raises the question whether the referent of “them” is “claims” or “serious questions.”
    Normally, the referent of a pronoun is the word or phrase immediately preceding it. That would
    mean that a plaintiff’s “claims” must be sufficiently serious to make them a fair ground for
    litigation. But the Otoe‐Missouria Tribe formulation could also be read to mean that the “serious
    questions” must be sufficiently serious to make them a fair ground for litigation.
    The origin and evolution of the serious‐questions standard indicate that what must be
    sufficiently serious to be a fair ground of litigation are the questions that the plaintiff’s claims
    raise, not the claims themselves (although the distinction probably makes little, if any, difference
    in practice). The first version of what has become the first component of the serious‐questions
    standard appears in Hamilton Watch Co. v. Benrus Watch Co., 
    206 F.2d 738
     (2d Cir. 1953), where we
    referred to “questions going to the merits so serious, substantial, difficult and doubtful, as to
    make them a fair ground for litigation,” 
    id. at 740
     (emphasis added). This formulation was
    repeated verbatim later the same year in Unicon Management Corp. v. Koppers Co., 
    366 F.2d 199
    ,
    205 (2d Cir. 1966), and Dino DeLaurentis Cinematografica, S.p.A. v. D‐150, Inc., 
    366 F.2d 373
    , 376
    (2d Cir. 1966). This formulation was substantially repeated three years later in Checker Motors
    Corp. v. Chrysler Corp., 
    405 F.2d 319
     (2d Cir. 1969), but with omission of the word “doubtful,” 
    id. at 323
    . Three years later, in Stark v. New York Stock Exchange, 
    466 F.2d 743
     (2d Cir. 1972), we
    shortened the formulation to just “serious questions going to the merits.” 
    Id. at 744
    . The following
    year, in Gulf & Western Industries, Inc. v. Great Atlantic & Pacific Tea Co., 
    476 F.2d 687
     (2d Cir. 1973),
    we expanded that short version to “serious questions going to the merits which warrant further
    investigation for trial.” 
    Id. at 692
    . Later that year, in Sonesta International Hotels Corp. v. Wellington
    Associates, 
    483 F.2d 247
     (2d Cir. 1973), there first appeared the current version of the formulation,
    “sufficiently serious questions going to the merits to make them a fair ground for litigation.” 
    Id. at 250
     (emphasis added). This formulation was repeated verbatim in a series of cases. See
    Triebwasser & Katz v. American Telephone & Telegraph Co., 
    535 F.2d 1356
    , 1358 (2d Cir. 1976); New
    York v. Nuclear Regulatory Commission, 
    550 F.2d 745
    , 750 (2d Cir. 1977); Selchow & Richter Co. v.
    McGraw‐Hill Book Co., 
    580 F.2d 25
    , 27 (2d Cir. 1978); Caulfield v. Board of Education, 
    583 F.2d 605
    ,
    610 (2d Cir. 1978); Jackson Dairy, Inc. v. H.P. Hood & Sons, Inc., 
    596 F.2d 70
    , 72 (2d Cir. 1979); see
    also William H. Mulligan, Foreword―Preliminary Injunction in the Second Circuit, 
    43 Brook. L. Rev. 831
     (primarily considering requirement of irreparable injury).
    Thereafter, this Court and district courts in this Circuit cited Jackson Dairy and its
    formulation of the serious‐questions standard innumerable times, as the citing references
    collected by Westlaw indicate, until in Plaza Health Laboratories, Inc. v. Perales, 
    878 F.2d 577
     (2d
    Cir. 1989), the formulation was rephrased to “sufficiently serious questions going to the merits of
    12
    deleted); Jackson Dairy, Inc. v. H.P. Hood & Sons, Inc., 
    596 F.2d 70
    , 72 (2d Cir. 1979).
    The Committees contend that the likelihood‐of‐success standard applies;
    Appellants contend that the serious‐questions standard applies.20
    With respect to irreparable harm, a factor required under either standard,
    Appellants contend that compliance with the subpoenas will cause them such
    its claims to make them fair ground for litigation.” Id. at 580. Plaza Health Laboratories added the
    phrase “of its claims,” thereby creating the grammatical query considered in this footnote. Plaza
    Health Laboratories cited only Sperry International Trade, Inc. v. Government of Israel, 
    670 F.2d 8
     (2d
    Cir. 1982), and Jackson Dairy, but both of those opinions had used the traditional formulation
    without the phrase “of its claims.” See Sperry International Trade, 
    670 F. 2d at 110
    ; Jackson Dairy,
    598 F.2d at 11. A Westlaw search reveals that the Plaza Health Laboratories formulation has been
    used by this Court just fifteen times, and the Jackson Dairy formulation has been used 226 times.
    In view of the evolution of, and this Court’s clear preference for, the Jackson Dairy
    formulation, we will use it in this opinion, thereby avoiding the grammatical query posed by the
    Plaza Health Laboratories formulation. We will also use the article “a” before “fair ground for
    litigation,” which Plaza Health Laboratories and some of the opinions citing it omitted, but which
    is always included in the opinions using the Jackson Dairy formulation.
    20 In their reply brief, Appellants contend that “the Committees conceded [in the District
    Court] that the serious‐questions standard applies.” Reply Br. for Appellants at 2. They cite
    footnote 28 of the Committees’ memorandum in opposition to the motion for a preliminary
    injunction. We normally do not consider an issue raised for the first time in a reply brief. See
    McBride v. BIC Consumer Products Manufacturing Co., 
    583 F.3d 92
    , 96 (2d Cir. 2009). In any event,
    Appellants’ claim is without merit.
    The Committees’ footnote states, “To the extent there is any meaningful distinction
    between the Winter [v. Natural Resources Defense Council, Inc., 
    555 U.S. 7
    , 20 (2008)] standard and
    the ‘serious questions’ formulation, that has also been used by the Second Circuit in post‐Winter
    cases, see Citigroup Global Markets, Inc. v. VCG Special Opportunities Master Fund Ltd., 
    598 F.3d 30
    ,
    36‒38 (2d Cir. 2010), this Court need not consider that nuance here because Mr. Trump has failed
    to meet the heavy burden required under either standard.” Dist. Ct. Dkt. No. 51, at 10 n.28
    (citation omitted) (May 10, 2019). Stating that the Lead Plaintiff had not met either the likelihood‐
    of‐success standard or the serious‐questions standard is not a concession that the lesser standard
    applies. Moreover, in the sentence of text to which the footnote is appended, the Committees
    explicitly contend that the higher standard applies, stating that to obtain a preliminary injunction
    “a plaintiff ‘must establish that he is likely to succeed on the merits.’” Id. at 10 (quoting New York
    Progress & Protection PAC v. Walsh, 
    733 F.3d 483
    , 486 (2d Cir. 2003)).
    13
    harm. In the District Court, the Committees took the position that whether
    compliance would cause Appellants irreparable harm would depend on whether
    the Committees would make public the documents obtained.21 The District Court
    ruled that compliance would cause irreparable harm because “plaintiffs have an
    interest     in   keeping       their    records        private    from     everyone,       including
    congresspersons,” and “the committees have not committed one way or the other
    to keeping plaintiffs’ records confidential from the public once received.” J. App’x
    122‒23. We agree.
    The issue therefore becomes whether Appellants seeking a preliminary
    injunction had to meet (1) the more rigorous standard of a likelihood of success on
    the merits or (2) the less rigorous standard of sufficiently serious questions going
    to the merits to make them a fair ground for litigation plus a balance of hardships
    tipping decidedly in their favor.22
    21 Counsel for the Committees said to the District Court, “[J]ust because documents are
    turned over to Congress, that itself is not irreparable injury. The question is if Congress was going
    to disclose them. So just turning it over to Congress is not irreparable injury.” J. App’x 111.
    22 One opinion of this Court noted that “[b]ecause the moving party must not only show
    that there are ‘serious questions’ going to the merits, but must additionally establish that ‘the
    balance of hardships tips decidedly’ in its favor, its overall burden is no lighter than the one it bears
    under the ‘likelihood of success’ standard.” Citigroup Global Markets, Inc. v. VCG Special
    Opportunities Master Fund Ltd., 
    598 F.3d 30
    , 35 (2d Cir. 2010) (citation omitted) (emphasis in
    original). Although that might have been the situation on the facts of that case, there can be no
    doubt, as we have repeatedly said, that the likelihood‐of‐success standard is more rigorous than
    the serious‐questions standard. See, e.g., Central Rabbinical Congress of U.S. & Canada v. New York
    City Dep’t of Health & Mental Hygiene, 
    763 F.3d 183
    , 192 (2d Cir. 2014) (likelihood‐of‐success
    14
    With slightly different formulations, we have repeatedly stated that the
    serious‐questions standard cannot be used to preliminarily enjoin governmental
    action. See Plaza Health Laboratories, Inc. v. Perales, 
    878 F.2d 577
    , 580 (2d Cir. 1989)
    (applying more rigorous likelihood‐of‐success standard in affirming denial of
    preliminary injunction against “governmental action taken in the public interest
    pursuant to a statutory or regulatory scheme”); Union Carbide Agricultural Products
    Co. v. Costle, 
    632 F.2d 1014
    , 1018 (2d Cir. 1980) (same, with respect to
    “governmental action that is in the public interest”); Medical Society of State of New
    York v. Toia, 
    560 F.2d 535
    , 538 (2d Cir. 1977) (same, where “interim relief [enjoining
    governmental action] may adversely affect the public interest”); see also Able v.
    United States, 
    44 F.3d 128
    , 131 (2d Cir. 1995) (“As long as the action to be enjoined
    is taken pursuant to a statutory or regulatory scheme, even government action
    with respect to one litigant requires application of the ‘likelihood of success’
    standard.”).
    Nevertheless, in two decisions, we have affirmed preliminary injunctions
    against government action issued using the less rigorous serious‐questions
    standard “more rigorous”); Red Earth LLC v. United States, 
    657 F.3d 138
    , 143 (2d Cir. 2011) (same);
    Metropolitan Taxicab Board of Trade v. City of New York, 
    615 F.3d 152
    , 156 (2d Cir. 2010) (same);
    County of Nassau v. Leavitt, 
    524 F.3d 408
    , 414 (2d Cir. 2008) (same).
    15
    standard. See Haitian Centers Council, Inc. v. McNary, 
    969 F.2d 1326
    , 1342 (2d Cir.
    1992) (officials of the Immigration and Naturalization Service enjoined), judgment
    vacated as moot sub nom. Sale v. Haitian Centers Council, Inc., 
    509 U.S. 918
     (1993);
    Mitchell v. Cuomo, 
    748 F.2d 804
    , 806‒08 (2d Cir. 1984) (state prison officials
    enjoined). We have sometimes affirmed decisions that issued or denied
    preliminary injunctions against government action using both standards. See
    Hudson River Sloop Clearwater, Inc. v. Dep’t of Navy, 
    836 F.2d 760
    , 763 (2d Cir. 1988)
    (preliminary injunction denied under both standards); Patton v. Dole, 
    806 F.2d 24
    ,
    28‒30 (2d Cir. 1986) (preliminary injunction granted under both standards);
    Patchogue Nursing Center v. Bowen, 
    797 F.2d 1137
    , 1141‒42 (2d Cir. 1986)
    (preliminary injunction denied under both standards).
    Haitian Centers noted that “the ‘likelihood of success’ prong need not always
    be followed merely because a movant seeks to enjoin government action.” 
    969 F.2d at 1339
     (emphasis added). Then, building on the statement in Plaza Health
    Laboratories that the less rigorous standard may not be used to enjoin
    “governmental action taken in the public interest pursuant to a statutory or
    regulatory scheme,” 
    878 F.2d at 580
     (emphasis added), Haitian Centers noted that
    “no party has an exclusive claim on the public interest,” 
    969 F.2d at 1339
    . That
    16
    point influenced our later decision in Time Warner Cable of New York City L.P. v.
    Bloomberg L.P., 
    118 F.3d 917
     (2d Cir. 1997), where, noting that “there are public
    interest concerns on both sides” of the litigation, 
    id. at 923
    , we said that the serious‐
    questions standard “would be applicable,” 
    id. at 924
    , even though we ultimately
    decided the case under the likelihood‐of‐success standard, see 
    id.
    In Able, we noted that the government action exception to the use of the
    serious‐questions standard “reflects the idea that governmental policies
    implemented      through     legislation    or   regulations     developed      through
    presumptively reasoned democratic processes are entitled to a higher degree of
    deference and should not be enjoined lightly,” 44 F.3d at 131, and that the
    likelihood‐of‐success standard was appropriate in that case “where the full play
    of the democratic process involving both the legislative and executive branches
    has produced a policy in the name of the public interest embodied in a statute and
    implementing regulations,” id. We also pointed out that Haitian Centers had
    approved use of the serious‐questions standard to challenge action taken pursuant
    to a “policy formulated solely by the executive branch.” Id. Based on these
    statements, Appellants contend that only the serious‐questions standard applies
    17
    to challenge any action “taken pursuant to a policy formulated by one branch.”
    Reply Br. for Appellants at 3 (quotation marks and brackets omitted).
    We think that argument fails by endeavoring to make a requirement out of
    the sentences we have quoted from Able. The fact that legislation developed by
    both branches of the federal government is entitled to a higher degree of deference
    does not mean that only such action is entitled to the deference reflected in the
    likelihood‐of‐success standard. The Supreme Court has said that a high degree of
    deference should be accorded to actions taken solely by Congress, see United States
    v. Rumely, 
    345 U.S. 41
    , 46 (1953) (admonishing courts to “tread warily”
    “[w]henever constitutional limits upon the investigative power of Congress have
    to be drawn”), and we have often approved application of the more rigorous
    likelihood‐of‐success standard to enjoin action taken by units of government with
    far less authority than the combined force of the national Legislative and Executive
    Branches. For example, we have ruled that the more rigorous likelihood‐of‐success
    standard was applicable when a preliminary injunction was sought to prohibit a
    municipal agency from enforcing a regulation, see Central Rabbinical Congress of
    U.S. and Canada v. New York City Dep’t of Health & Mental Hygiene, 
    763 F.3d 183
    , 192
    (2d Cir. 2014); to prohibit New York City’s Taxi & Limousine Commission from
    18
    enforcing changes to lease rates, Metropolitan Taxicab Board of Trade v. City of New
    York, 
    615 F.3d 152
    , 156 (2d Cir. 2010); to require one branch of a state legislature to
    undo its expulsion of a state senator, see Monserrate v. New York State Senate, 
    599 F.3d 148
    , 154 (2d Cir. 2010); to prohibit a town from hiring police officers and
    firefighters, see NAACP v. Town of East Haven, 
    70 F.3d 219
    , 223 (2d Cir. 1995); to
    prohibit the Metropolitan Transit Authority from implementing a staff reduction
    plan, see Molloy v. Metropolitan Transportation Authority, 
    94 F.3d 808
    , 811 (2d Cir.
    1996); to prohibit the New York City Transit Authority from increasing subway
    and bus fares, see New York Urban League, Inc. v. State of New York, 
    71 F.3d 1031
    ,
    1036 n.7 (2d Cir. 1995); to prohibit New York State’s Department of Social Services
    from suspending a health‒care services provider from participating in the State’s
    medical assistance program, see Plaza Health Laboratories, 
    878 F.2d at 580
    , and to
    prohibit two commissioners of New York state agencies from enforcing provisions
    of state law, see Medical Society, 
    560 F.2d at 538
    .
    In dissent, Judge Livingston questions the significance of decisions such as
    these on two grounds. First, she suggests that some of them lacked sufficient
    analysis. See Part. Diss. Op. at 44. However, with exceptions not relevant here,
    panels of this Court are bound by the holdings of prior panels, see, e.g., Lotes Co. v.
    19
    Hon Hal Precision Industry Co., 
    753 F.3d 395
    , 405 (2d Cir. 2014); Gelman v. Ashcroft,
    
    372 F.3d 495
    , 499 (2d Cir. 2004), and those holdings are not to be disregarded by
    any claimed insufficiency of an opinion’s analysis. Second, she suggests that we
    might have used the more rigorous likelihood‐of‐success standard in these cases
    because of federalism concerns. See Part. Diss. Op. at 45, n.28. However, none of
    the eight decisions even hints that federalism concerns influenced the use of the
    likelihood‐of‐success standard.
    We have not previously had occasion to consider whether enforcement of a
    congressional committee’s subpoena qualifies as, or is sufficiently analogous to,
    “governmental action taken in the public interest pursuant to a statutory or
    regulatory scheme,” Plaza Health Laboratories, 
    878 F.2d at 580
    , so as to preclude
    application of the less rigorous serious‐questions standard. Facing that issue, we
    conclude that those seeking to preliminarily enjoin compliance with subpoenas
    issued by congressional committees exercising, as we conclude in Part II(C), their
    constitutional and duly authorized power to subpoena documents in aid of both
    regulatory oversight and consideration of potential legislation must satisfy the
    more rigorous likelihood‐of‐success standard. Surely such committees should not
    be enjoined from accomplishing their tasks under a less rigorous standard than we
    20
    applied to plaintiffs seeking to preliminarily enjoin state and local units of
    government in Central Rabbinical Congress, Metropolitan Taxicab Board of Trade,
    Monserrate, Town of East Haven, Molloy, New York Urban League, Plaza Health Medical
    Society, discussed above. None of those cases involved implementation of a policy
    ʺdeveloped through presumptively reasoned democratic processesʺ and resulting
    from ʺthe full play of the democratic process involving both the legislative and
    executive branches,ʺ which were the elements present in Able, 44 F.3d at 131. Yet
    in all eight cases, we applied the likelihood‐of‐success standard. Indeed, in
    Monserrate we applied the more rigorous standard to a plaintiff seeking to
    preliminarily enjoin action taken by just one body of a state legislature. We will
    therefore apply the likelihood‐of‐success standard to Appellants’ motion for a
    preliminary injunction in this case.
    Before leaving the issue of the applicable preliminary injunction standard,
    we should reckon with the preliminary injunction standard formulated in 2008 by
    the Supreme Court in Winter v. Natural Resources Defense Council, Inc., 
    555 U.S. 7
    ,
    20 (2008): “A plaintiff seeking a preliminary injunction must establish that he is
    likely to succeed on the merits, that he is likely to suffer irreparable harm in the
    absence of preliminary relief, that the balance of equities tips in his favor, and that
    21
    an injunction is in the public interest.” 
    Id. at 20
    . This formulation incorporates both
    the irreparable injury requirement and the likelihood‐of‐success requirement from
    the more rigorous standard we have been using, includes from our less rigorous
    serious‐questions standard a balance of equities (similar to hardships) that tips in
    favor of the plaintiff (although not including the requirement of sufficiently
    serious questions going to the merits to make them a fair ground for litigation nor
    the requirement that the balance of hardships tips decidedly in the plaintiff’s favor),
    and adds as a fourth requirement that the injunction is in the public interest.
    It is not clear whether the Supreme Court intended courts to require these
    four components of the Winter standard in all preliminary injunction cases. Winter
    concerned military operations affecting the national security, testing for
    submarine detection, and two of the three cases cited to support the Winter
    formulation also concerned national security issues, Munaf v. Geren, 
    553 U.S. 674
    (2008) (transferring U.S. military prisoners in a foreign country to that country’s
    government), and Weinberger v. Romero‐Barcelo, 
    456 U.S. 305
     (1982) (training the
    Navy’s bomber pilots). The third case, Amoco Production Co. v. Village of Gambell,
    22
    
    480 U.S. 531
     (1987), concerned a matter unrelated to national security‒‒drilling for
    oil and natural gas.23
    In any event, two years after the Supreme Court’s decision in Winter, our
    Court explained why we did not believe that the Supreme Court had precluded
    our use of the two preliminary injunction standards that we had used for five
    decades. See Citigroup Global Markets, Inc. v. VCG Special Opportunities Master Fund
    Ltd., 
    598 F.3d 30
    , 35–38 (2d Cir. 2010). However, Citigroup shed no light on which
    of those standards was applicable to plaintiffs seeking to preliminarily enjoin
    governmental action. That case involved a motion by a brokerage firm to
    preliminarily enjoin a hedge fund from pursuing an arbitration. See 
    id. at 32
    .
    23 Uncertainty as to use of the Winter formulation for all preliminary injunctions remained
    after the Supreme Court’s decision the next year in Nken v. Holder, 
    556 U.S. 418
     (2009). In language
    similar to that used in Winter, the Court identified the four factors applicable to the grant of a stay
    pending appeal––“(1) whether the stay applicant has made a strong showing that he is likely to
    succeed on the merits; (2) whether the applicant will be irreparably injured absent a stay; (3)
    whether issuance of the stay will substantially injure the other parties interested in the
    proceeding; and (4) where the public interest lies.” 
    Id. at 434
     (quotation marks omitted). The Court
    then stated that “[t]here is substantial overlap between these [four factors] and the factors
    governing preliminary injunctions,” although the two are not “one and the same.” 
    Id.
    In Winter, the first factor did not include the words “strong showing,” 
    555 U.S. at 20
    ; the
    second factor used the word “likely” to modify “suffer irreparable harm, id.; the third factor was
    “the balance of equities tips in [the plaintiff’s] favor,” id.; and the fourth factor was that an
    injunction “is in the public interest,” 
    id.
     Unlike Winter, which had set out four factors that an
    applicant for a preliminary injunction “must establish,” 
    id.,
     Nken said that the applicable legal
    principles “have been distilled into consideration of four factors.” 
    556 U.S. at 434
     (emphasis added).
    23
    Although we have concluded that the likelihood‐of‐success standard
    applies in this case and have determined that Appellants have established
    irreparable injury, a requirement common to both of our preliminary injunction
    standards and the Supreme Court’s Winter formulation, we will proceed to
    consider not only whether Appellants have met the governing likelihood‐of‐
    success standard but also whether they have satisfied the other requirements in
    one or more of these three standards: sufficiently serious questions going to the
    merits of their claims to make them fair ground for litigation, a balance of
    hardships tipping decidedly in their favor, and the public interest favoring an
    injunction. We turn first to the merits of their statutory and constitutional claims
    in order to determine what we regard as the critical issue: likelihood of success.
    II. Likelihood of Success
    A. Statutory Claim––RFPA
    Appellants contend that the subpoenas are invalid for failure of the
    Committees to comply with the Right to Financial Privacy Act (“RFPA” or “Act”),
    
    12 U.S.C. §§ 3401
    ‒3423. RFPA prohibits a financial institution’s disclosure of a
    customer’s financial records to “any Government authority” except in accordance
    with the Act’s procedural requirements. § 3403(a). The Committees acknowledge
    24
    noncompliance with those requirements, but contend that RFPA does not apply to
    them because they are not a “Government authority” within the meaning of
    section 3403(a). Because the Act defines “Government authority” to mean “any
    agency or department of the United States, or any officer, employee, or agent
    thereof,” § 3401(3), the precise statutory issue is whether Congress or one of its
    committees is an “agency or department of the United States.”
    We begin with the plain meaning of “agency or department” at the time
    RFPA was enacted in 1978. Appellants do not argue that “agency” could possibly
    refer to Congress; the sole dispute is over the word “department.” Appellants
    contend that “department” is used in RFPA to mean any of the three branches of
    government. The Committees, on the other hand, contend that the word is used to
    mean some component of the Executive Branch.
    Contemporary dictionaries support the Committees’ interpretation. See
    Webster’s Third New International Dictionary (1971) (defining “department” as
    “an administrative division or branch of a national or municipal government”)
    (emphasis added); Black’s Law Dictionary (5th ed. 1979) (defining “department”
    as “[o]ne of the major administrative divisions of the executive branch of the
    25
    government usually headed by an officer of cabinet rank; e.g., Department of
    State”) (emphasis added).
    Moreover, other contextual clues in RFPA indicate that neither Congress nor
    its committees are an “agency or department of the United States” within the
    meaning of RFPA, and therefore Congress did not subject itself or its committees
    to the Act. Section 3408 permits a “Government authority” to request financial
    records “pursuant to a formal written request only if . . . the request is authorized
    by regulations promulgated by the head of the agency or department.” § 3408(2).
    Congress does not promulgate regulations, and its leadership and that of its
    committees are not considered the “head” of an “agency or department.” The
    Supreme Court has stated that “[t]he term ‘head of a Department’ means . . . the
    Secretary in charge of a great division of the [E]xecutive [B]ranch of the
    government, like the State, Treasury, and War, who is a member of the Cabinet.”
    Burnap v. United States, 
    252 U.S. 512
    , 515 (1920); accord Freytag v. Commissioner of
    Internal Revenue, 
    501 U.S. 868
    , 886 (1991).
    26
    The several mechanisms for obtaining financial records all require that the
    records sought are “relevant to a legitimate law enforcement inquiry,”24 § 3405(1)
    (administrative summons or subpoena), § 3407(1) (judicial subpoena), § 3408(3)
    (formal written request), but, as Appellants correctly point out and the
    Committees agree, Congress cannot exercise “any of the powers of law
    enforcement” because “those powers are assigned under our Constitution to the
    Executive and the Judiciary,” Quinn v. United States, 
    349 U.S. 155
    , 161 (1955).
    RFPA directs the Office of Personnel Management (“OPM”) to determine
    whether “disciplinary action is warranted against [an] agent or employee” of “any
    agency or department” found to have willfully violated the Act. § 3417(b).
    However, OPM is “the lead personnel agency for civilian employees in the
    [E]xecutive [B]ranch.” United States Dep’t of Air Force v. Federal Labor Relations
    Authority, 
    952 F.2d 446
    , 448 (D.C. Cir. 1991). It is highly unlikely that Congress
    would have directed OPM to take disciplinary action against congressional staff.
    RFPA provides civil penalties, including punitive damages, for any “agency
    or department” that violates the Act’s requirements. § 3417(a). It is also highly
    24RFPA defines “law enforcement inquiry” as “a lawful investigation or official
    proceeding inquiring into a violation of, or failure to comply with, any criminal or civil statute or
    any regulation, rule, or order issued pursuant thereto.” 
    12 U.S.C. § 3401
    (8).
    27
    unlikely that Congress would have subjected itself to such penalties, especially in
    the absence of a clear indication of an intent to do so.
    Although no one of these provisions alone conclusively establishes that
    RFPA does not apply to Congress, in the aggregate they provide persuasive textual
    support for that reading of the Act. This conclusion is strongly reinforced by the
    Act’s legislative history. A draft bill submitted by the Departments of Justice and
    the Treasury would have explicitly covered access to financial records by
    Congress, and distinguished Congress from “any agency or department of the
    United States.”25
    25 Electronic Funds Transfer & Financial Privacy: Hearings on S. 2096, S. 2293, & S. 1460 Before
    the Subcomm. on Financial Institutions of the S. Comm. on Banking, Housing, & Urban Affairs, 95th
    Cong. 397 (1978) (hereinafter “Hearings”).
    Hearings includes a draft bill, dated May 17, 1978, and referred to as “Title XI—Right to
    Financial Privacy,” which is identified by a note stating, “This Draft represents the combined
    views of the Departments of Justice and the Treasury, subject to further revision.” Hearings at 397
    n.*. The definition section of that bill provides:
    “‘[G]overnment authority’ means the Congress of the United States, or any agency or
    department of the United States or of a State or political subdivision, or any officer,
    employee or agent of any of the foregoing.”
    Hearings at 397 (emphasis added) (explaining definitional provision, § 1101(3)). This provision
    not only explicitly made the bill applicable to Congress, but it also reflected the view of Justice
    and the Treasury that “agency or department of the United States” did not include Congress.
    Hearings also contains a section‐by‐section analysis of the Justice‐Treasury draft bill
    submitted on May 17, 1978. See Hearings at 365 & n.*. That analysis includes the following
    explanation of the coverage of the draft bill:
    “The ‘government authorities’ whose actions are restricted by the bill include any
    agency or department of the United States or any State or political subdivision, or
    any of their officers, employees, or agents. The Congress is also covered, since it may
    use financial records in its investigations to which the same privacy rights should
    adhere.”
    28
    The rejection of this provision of the Justice‐Treasury proposal by omitting
    Congress from the enacted definition of “government authority” is strong
    evidence of a deliberate decision by Congress not to apply the Act to itself.
    Although the failure of Congress to enact is often an unreliable indication of
    congressional intent, see Brecht v. Abrahamson, 
    507 U.S. 619
    , 632 (1993) (“As a
    general matter, we are reluctant to draw inferences from Congress’ failure to act.”)
    (quotation marks omitted), the omission of pertinent language from a bill being
    considered by Congress is far more probative of such intent, especially when the
    omission is from a draft bill submitted by the Department of Justice, a principal
    source of proposed legislation.
    Hearings at 366 (emphasis added) (explaining definitional provision).
    As explained by then‐Deputy Attorney General Benjamin R. Civiletti, “[O]ur
    proposal would extend these important procedures and privacy rights to cover
    investigations by the Legislative as well as the Executive Branch.” Hearings at 189, 194.
    Hearings also includes an analysis prepared by the Congressional Research Service
    of the Library of Congress, comparing what is called “Draft Proposed by Justice Dept.”
    with S. 14 and S. 2096. Hearings at 161. That analysis points out that the scope of the Justice
    Department draft protects financial records from unauthorized access “by Congress,
    Federal or State agents and agencies,” whereas S. 14 and S. 2096 protect such records from
    unauthorized access “by Federal agents or agencies.” 
    Id.
    The draft Justice‐Treasury bill, along with its section‐by‐section analysis, are also
    in the record of a hearing held by a House of Representatives subcommittee the following
    week, where Civiletti gave similar testimony. See Right to Privacy Proposals of the Privacy
    Protection Study Commission: Hearings on H.R. 10076 Before the Subcomm. on Government
    Information & Individual Rights of the H. Comm. on Government Operations, 95th Cong. 256,
    274 (1978).
    29
    Appellants present two arguments that Congress and its committees are
    covered by RFPA’s definitional phrase “agency or department.” First, they point
    out that in 1955 the Supreme Court ruled a false statement made by a former
    member of Congress to the Disbursing Office of the House of Representatives was
    a violation of 
    18 U.S.C. § 1001
     because “department,” as used in section 1001, “was
    meant to describe the executive, legislative and judicial branches of the
    Government.” United States v. Bramblett, 
    348 U.S. 503
    , 509 (1955) (emphasis added).
    The Committees respond that an interpretation of “department” in section
    1001 is not an authoritative basis for interpreting “department” in RFPA and that
    the Supreme Court overruled Bramblett in Hubbard v. United States, 
    514 U.S. 695
    ,
    715 (1995), after characterizing its reading of “department” as “seriously flawed,”
    
    id. at 702
    . To this latter point, Appellants point out that courts “assume that
    Congress is aware of existing law when it passes legislation,” Miles v. Apex Marine
    Corp., 
    498 U.S. 19
    , 32 (1990), and “was aware of . . . the judicial background against
    which it was legislating,” DeKalb County Pension Fund v. Transocean Ltd., 
    817 F.3d 393
    , 409‒10 (2d Cir. 2016) (“DeKalb”) (brackets and quotation marks omitted), and
    that the Congress that enacted RFPA in 1978 is assumed to be aware of Bramblett
    and obviously did not legislate in light of Hubbard, decided in 1995.
    30
    We acknowledge the assumption that Congress legislates with awareness of
    “existing law,” Miles, 
    498 U.S. at 32
    , and the relevant “judicial background,”
    DeKalb, 817 F.3d at 409. The validity of that assumption, however, depends in large
    part on the context in which it is invoked. Miles applied the assumption
    interpreting the damages provision of the Jones Act, 46 U.S.C. app. § 688. Noting
    that the Jones Act incorporated the recovery provisions of the older Federal
    Employers’ Liability Act (“FELA”), the Supreme Court was willing to assume that
    Congress likely intended to adopt for the Jones Act the judicial gloss that the Court
    had placed on the damages provision of FELA, limiting it to pecuniary loss. See
    Miles, 
    498 U.S. at 32
    . “When Congress passed the Jones Act, the [Court’s] gloss on
    FELA, and the hoary tradition behind it, were well established. Incorporating
    FELA unaltered into the Jones Act, Congress must have intended to incorporate
    the pecuniary limitation on damages as well.” 
    Id.
    DeKalb applied the assumption more elaborately in determining which
    statute of repose applied to a suit under section 14(a) of the Securities Exchange
    Act of 1934, 15 U.S.C. § 78n(a). We had previously applied a three‐year limitations
    period in Ceres Partners v. GEL Associates, 
    918 F.2d 349
     (2d Cir. 1990). Thereafter,
    Congress enacted the Sarbanes‐Oxley Act of 2002, extending to five years the
    31
    limitations period for some implied private causes of action, but not the sort of
    action implied by section 14(a). See DeKalb, 817 F.3d at 398. We concluded:
    Congress must have known that, by extending only the statute of
    repose applicable to private rights of action that involve a claim of
    fraud, deceit, manipulation, or contrivance, the statutes of repose
    applicable to Section 14(a) would remain intact. And from this
    knowledge, we conclude that Congress affirmatively intended to
    preserve them. We therefore hold that the same three‐year statutes of
    repose that we applied to Section 14 in Ceres . . . still apply to Section
    14(a) today.
    Id. at 409‒10 (quotation marks, brackets, and footnotes omitted).
    We encounter no circumstances comparable to Miles or DeKalb in the
    pending appeal. Whatever force might be given to the assumption that Congress
    enacted RFPA with awareness of Bramblett is thoroughly undermined by the clear
    indicators to the contrary from the text and legislative history we have recounted.26
    The second argument of Appellants reminds us that in an earlier time, the
    word “department” was famously used to refer to what is now called a “branch”
    of the federal government. “It is emphatically the province and duty of the judicial
    department to say what the law is.” Marbury v. Madison, 5 U.S. (1 Cranch) 137, 177
    26 Even if Congress had Bramblett in mind, that decision based its interpretation of
    “department” on the “development, scope and purpose of” the statute at issue in that case. 
    348 U.S. at 509
    . RFPA does not share any of the same historical development as section 1001, and
    because the Court’s decision was not based on the text of that section, there is no reason to think
    that Congress, when enacting RFPA, believed that Bramblett’s interpretation would extend to
    other uses of the word “department.”
    32
    (1803) (Little, Brown & Co. 1855);27 see also James Madison, Speech in the First
    Congress (June 17, 1789), in 5 The Writings of James Madison 395, 398 (Gaillard Hunt
    ed., 1904) (referring to the “three great departments of Government”). Hubbard,
    although not known to the Congress enacting RFPA, provides important guidance
    for us when the Supreme Court states that “while we have occasionally spoken of
    the three branches of our Government, including the Judiciary, as ‘departments,’”
    Hubbard, 
    514 U.S. at 699
     (brackets omitted) (citing Mississippi v. Johnson, 71 U.S. (4
    Wall.) 475, 500 (1867)), “that locution is not an ordinary one. Far more common is
    the use of ‘department’ to refer to a component of the Executive Branch,” 
    id.
    Considering all of the parties’ arguments,28 we conclude that RFPA does not
    apply to Congress.
    27 I include the publisher in citations to decisions in the nominative reports because of
    slight variations among the versions of 19th century publishers. See Jon O. Newman, Citators
    Beware: Stylistic Variations in Different Publishers’ Versions of Early Supreme Court Opinions, 
    26 J. Sup. Ct. Hist. 1
     (2001).
    28 Each side makes opposing arguments based on section 3412(d) of RFPA, which
    provides: “Nothing in this chapter shall authorize the withholding of information by any officer
    or employee of a supervisory agency [defined at section 3401(7)] from a duly authorized
    committee or subcommittee of the Congress.” Appellants contend that “[i]f congressional
    subpoenas were never intended to come within the statute’s scope, there would be no reason to
    include this provision.” Br. for Appellants at 42. The Committees respond that this provision
    concerns transfers of documents pursuant to section 3412(a), that it makes clear that the
    requirements applicable when an agency or department obtains documents from a financial
    institution also apply to transfers to another agency or department, and that “Congress
    emphasized, however, that these transfer provisions—like RFPA’s other requirements—did not
    apply to Congress.” Br. for Committees at 53.
    33
    B. Statutory Claim––
    26 U.S.C. § 6103
    The request for tax returns of named individuals and entities in the
    Deutsche Bank Subpoenas encounters a possible statutory claim under 
    26 U.S.C. § 6103
    . See Deutsche Bank Subpoenas ¶ 1(vi)(e)(7), J. App’x 39. Because of that
    request and because the parties had not said anything about tax returns in their
    briefs, we asked the Banks at oral argument whether they had in their possession
    tax returns within the coverage of the subpoenas. The Banks offered reasons why
    they could not then respond to the question.
    On August 26, we ordered the Banks to inform the Court whether either one
    has in its possession any tax returns of the individuals or entities named in
    paragraph 1 of the subpoenas received from the Committees.29 On August 27,
    Each side also makes opposing arguments based on section 3413(j) of RFPA, which
    provides: “This chapter shall not apply when financial records are sought by the Government
    Accountability Office [‘GAO’] pursuant to an authorized proceeding, investigation, examination
    or audit directed at a government authority.” Appellants contend that, because GAO is within
    the Legislative Branch, “if . . . RFPA is limited to the [E]xecutive [B]ranch, then there was no need
    to provide any exemption for the GAO.” Br. for Appellants at 43. The Committees respond that
    this provision “differentiates GAO from ‘a government authority’ and thus supports the opposite
    conclusion: GAO may obtain financial records in its proceedings or investigations that are
    ‘directed at a government authority.’” Br. for Committees at 53 n.24 (emphasis in original).
    We deem none of these arguments persuasive, especially in light of the textual and
    legislative history support for our conclusion, explained above, that RFPA does not apply to
    Congress.
    29 No. 19‒1540, Dkt. No. 156 (Aug. 26, 2019). On August 27, we entered an Order informing
    the Banks that if they filed an unredacted letter under seal, a redacted version of the letter served
    on the Committees should be served on Appellants and filed on the public docket. 
    Id.,
     Dkt. No.
    157 (Aug. 27, 2019).
    34
    Deutsche Bank submitted a redacted letter stating that it has in its possession some
    tax returns responsive to the subpoenas, with the names of the taxpayers
    redacted,30 and submitted under seal an unredacted letter identifying the
    taxpayers.31 On the same day, Capital One submitted a letter stating that it did not
    possess any tax returns responsive to the subpoena it received.32
    Deutsche Bank’s filing of an unredacted letter under seal precipitated
    motions by various news organizations for leave to intervene and to seek
    unsealing of the unredacted letter.33 On Sept. 18, we ordered the parties to respond
    to those motions.34 On Sept. 27, the parties filed their responses.35 On Oct. 4, the
    Media Coalition filed a reply memorandum.36 On Oct. 10, we granted the motions
    to intervene and denied the motions to unseal. See Trump v. Deutsche Bank, No. 19‒
    1540, 
    2019 WL 5075948
     (2d Cir. Oct. 10, 2019).
    Also at oral argument, we asked the Committees whether their subpoenas
    were in compliance with 
    26 U.S.C. § 6103
    (f), which imposes some limits on
    30
    
    Id.,
     Dkt. No. 161 (Aug. 27, 2019).
    31  See Letter from Raphael A. Prober, counsel for Deutsche Bank, to Clerk of Court, Second
    Circuit Court of Appeals, No. 19‒1540, Dkt. No. 160 (Aug. 27, 2019).
    32 See Letter from James A. Murphy, counsel for Capital One, to Clerk of Court, Second
    Circuit Court of Appeals, No. 19‒1540, Dkt. No. 165 (Aug. 27, 2019).
    33 No. 19‒1540, Dkt. Nos. 168 (Sept. 11, 2019), 181 (Sept. 18, 2019).
    34
    
    Id.,
     Dkt. No. 180 (Sept. 18, 2019).
    35
    
    Id.,
     Dkt. Nos. 184, 186, 188, 190 (Sept. 27, 2019).
    36
    
    Id.,
     Dkt. No. 193 (Oct. 4, 2019).
    35
    disclosure of tax returns. The Committees partially responded and offered to
    submit a fuller explanation by letter. On August 27, the Committees submitted a
    letter stating that the application of section 6103 depends on how the Banks
    obtained the returns.37 On August 29, Appellants submitted a letter stating, among
    other things, that the Committees have no authority to request the tax returns.38
    Section 6103(a) of the Internal Revenue Code provides: “(a) General rule.—
    Returns and return information shall be confidential . . . .” Sections 6103(c)‒(o)
    provide several exceptions to the general requirement of confidentiality.
    Subsection 6103(f)(3) makes a specific exception for committees of Congress. It
    provides:
    “(3) Other committees.—Pursuant to an action by, and upon
    written request by the chairman of, a committee of the Senate or the
    House of Representatives (other than a committee specified in
    paragraph (1)) specially authorized to inspect any return or return
    information by a resolution of the Senate or the House of
    Representatives . . . the Secretary shall furnish such committee, or a
    duly authorized and designated subcommittee thereof, sitting in
    closed executive session, with any return or return information which
    such resolution authorizes the committee or subcommittee to inspect.
    Any resolution described in this paragraph shall specify the purpose
    for which the return or return information is to be furnished and that
    37 See Letter from Douglas N. Letter, General Counsel, U.S. House of Representatives, to
    Clerk of Court, Second Circuit Court of Appeals, No. 19‒1540, Dkt. No. 158 (Aug. 27, 2019).
    38 See Letter from Patrick Strawbridge, counsel for President Donald J. Trump, to Clerk of
    Court, Second Circuit Court of Appeals, No. 19‒1540, Dkt. No. 166 (Aug. 29, 2019).
    36
    such information cannot reasonably be obtained from any other
    source.”
    
    26 U.S.C. § 6103
    (f)(3).39
    Thus, Congress has protected the confidentiality of income tax returns,
    subject to several exceptions, and specified how such returns may be obtained by
    a committee of Congress.
    Appellants contend that disclosure is prohibited (or, as they phrase it, that
    the Committees “have no jurisdiction to request tax returns”40) because the
    requirements of the subsection have not been met. They point out that the House
    has not passed a resolution specifically authorizing the Committees to inspect tax
    returns, specifying the purpose for which the returns are sought, or specifying that
    the information cannot reasonably be obtained from other sources. They also
    suggest that we need not resolve the issue now, but should leave it for resolution
    on remand.
    Because the Deutsche Bank Subpoenas require production of tax returns
    and the motion for a preliminary injunction to prohibit compliance has been
    39  The committees specified in paragraph (1) of section 6103(f) are the House Committee
    on Ways and Means, the Senate Committee on Finance, and the Joint Committee on Taxation.
    § 6103(f)(1). The Code defines “Secretary” as “the Secretary of the Treasury or his delegate.”
    § 7701(a)(11)(B).
    40 See Letter from Patrick Strawbridge, counsel for President Donald J. Trump, to Clerk of
    Court, Second Circuit Court of Appeals at 2, No. 19‒1540, Dkt. No. 166 (Aug. 29, 2019).
    37
    denied by the District Court, the absence of a ruling on production of the returns
    risks their disclosure to the Committees. We therefore believe that some ruling
    must be made.
    The Committees do not dispute that they have not met the requirements of
    section 6103(f), but they contend that the provision does not apply to any tax
    returns in the possession of Deutsche Bank unless the bank obtained them from
    the IRS.
    The text of section 6103 does not unambiguously resolve the dispute. In
    addition to citing the requirements of section 6103(f), Appellants rely on section
    6103(a). It states that tax returns “shall be confidential,” and that “except as
    authorized by [the Internal Revenue Code]” no person within three specified
    categories “shall disclose any return . . . obtained by him . . . in connection with his
    service” within any of the three categories. These include employees of the United
    States, employees of a state or various local agencies, and those who obtained
    access to a return pursuant to various subsections of section 6103(a). § 6103(a)(1)‒
    (3).
    If the introductory clause of section 6103(a) is a blanket protection of the
    confidentiality of tax returns, then it prohibits disclosure of the returns in the
    38
    possession of Deutsche Bank. But if that clause is to be read in conjunction with
    the rest of section 6103(a), then the clause means only that the returns are protected
    from disclosure by anyone within the three categories, and it does not prohibit
    disclosure in the pending appeal because Deutsche Bank is not within any of those
    categories. Arguably limiting the coverage of section 6103(a) is section 6103(b). It
    defines “return” “[f]or purposes of this section” as a return “which is filed with
    the Secretary.” § 6103(b)(1). That provision could mean either the document or
    digital file in the possession of the Secretary (including the IRS), which Deutsche
    Bank does not have, or a copy of a paper or digitized return that has been
    submitted to the Secretary, which Deutsche Bank does have.
    Another provision of section 6103 also creates ambiguity as to its meaning.
    Section 6103(f) states that a congressional committee may obtain a tax return “from
    the Secretary” pursuant to a House resolution meeting specified requirements, as
    set forth above. This provision could mean either that the only way a committee
    may obtain a tax return is to seek it from the Secretary and comply with the
    requirements of section 6103(f), or it could mean that those requirements apply
    only when a committee seeks a return from the Secretary and do not apply when
    a committee seeks a return from anyone else, such as Deutsche Bank.
    39
    Case law on these possible interpretations has evoked various rulings and
    statements. The Seventh Circuit has ruled that the introductory clause of section
    6103(a) is not a blanket protection of confidentiality, but protects only against
    disclosure by those described in subsections 6103(a)(1)‒(3). Hrubec v. National
    Railroad Passenger Corp., 
    49 F.3d 1269
     (7th Cir. 1995). “The ban on disclosure
    appears in the last, dangling, unnumbered portion of § 6103(a), not in the
    introductory phrase, and the ban is linked to the scope of identified subsections.”
    Id. at 1270–71. Hrubec found no violation of section 6103 by Amtrak employees
    who obtained copies of other employees’ tax returns from the IRS, but not as a
    result of a request covered by any of the categories identified in section 6103(a).41
    The Ninth Circuit has also given a narrow interpretation to section 6103. In
    Stokwitz v. United States, 
    831 F.2d 893
     (9th Cir. 1987), it ruled that “Section 6103
    establishes a comprehensive scheme for controlling the release by the IRS of
    information received from taxpayers to discrete identified parties.” 
    Id. at 895
    (emphasis in original); accord Lomont v. O’Neill, 
    285 F.3d 9
    , 14‒15 (D.C. Cir. 2002);
    Baskin v. United States, 
    135 F.3d 338
    , 342 (5th Cir. 1998); Ryan v. United States, 
    74 F.3d 1161
    , 1163 (11th Cir. 1996). Stokwitz found no violation of section 6103 where
    41 The returns had been obtained by someone’s forgery of an application for them. See
    Hrubec v. National Railroad Passenger Corp., 
    778 F. Supp. 1431
    , 1433 (N.D. Ill. 1991).
    40
    employees of the United States Navy seized from a taxpayer’s files copies of tax
    returns, even though the employees were covered by subsection 6103(a)(1). The
    Court relied on the definition of “tax return” in section 6103(b), see 
    id.
     at 895–96
    (“[T]he statutory definitions of ‘return’ and ‘return information’ to which the
    entire statute relates, confine the statute’s coverage to information that is passed
    through the IRS.”), and noted that implementing “Treasury regulations . . . are
    exclusively concerned with disclosure by the IRS,” 
    id.
     at 896 (citing Treas. Regs.
    §§ 301.6103(a)‐1 to (p)(7)‐1 (1986)).
    Other courts have expressed different views. In National Treasury Employees
    Union v. Federal Labor Relations Authority, 
    791 F.2d 183
     (D.C. Cir. 1986), the D.C.
    Circuit referred to section 6103(a) as a “general rule that ‘returns and return
    information shall be confidential.’” 
    Id. at 183
     (brackets omitted) (quoting
    § 6103(a)). The Court’s main point, however, was that the disclosure, which had
    been made by IRS employees, had not been made in compliance with subsection
    6103(l)(4)(A), and even that point, as well as the “general rule” statement, were
    dicta because the Court’s holding was that the employees should not have been
    disciplined.
    41
    A district court in our Circuit has stated that a board licensing plumbers
    violated section 6103 by making disclosure of a license applicant’s tax forms a
    condition of obtaining a license. See Russell v. Board of Plumbing Examiners, 
    74 F. Supp. 2d 339
     (S.D.N.Y. 1999) (“The Board being unable to get the copies directly
    from the Treasury should not be permitted to do so indirectly by coercion . . . .”),
    aff’d, 1 F. App’x 38 (2d Cir. 2001). The District Court’s view, however, was at most
    an alternate holding on an issue that the Court acknowledged had not been
    briefed, see 
    id. at 348
    , and our affirmance in a non‐precedential summary order
    made no reference to the issue, which had not been asserted as a ground for
    review, see Br. & Reply Br. for Appellants, Russell v. Board of Plumbing Examiners, 1
    F. App’x 38 (2d Cir. 2001) (No. 99‐9532).
    We agree with the Seventh Circuit that section 6103(a) limits its prohibition
    against disclosure of tax returns to returns requested from the three categories of
    persons identified in subsections 6103(a)(1)–(3). There remains the possibility,
    however, that subsection 6103(f)(3), applicable to requests for tax returns by
    congressional committees other than those concerned explicitly with taxes,
    provides the exclusive means for such committees to obtain returns. The text of
    subsection 6103(f)(3) refers to committee requests “to the Secretary.” We agree
    42
    with the Ninth Circuit that the plain language of the provision reflects Congress’s
    purpose in enacting section 6103, which “was to curtail loose disclosure practices
    by the IRS.” Stokwitz, 
    831 F.2d at 894
    . Because there is no claim by Appellants that
    Deutsche Bank obtained from the IRS any returns requested by the Committees,
    neither subsection 6103(f)(3), nor section 6103 as a whole, precludes their
    production to the Committees.
    Appellants also contend that production of tax returns is prohibited by the
    RFPA and the Gramm‐Leach‐Bliley Act, Pub. L. No. 106‐102, 
    113 Stat. 1338
     (1999).
    As we have ruled, however, RFPA does not apply to Congress. Gramm‐Leach‐
    Bliley is also no bar to production of tax returns because it explicitly permits
    disclosure of personal information “to comply with a . . . subpoena . . . by Federal
    . . . authorities.” 
    15 U.S.C. § 6802
    (e)(8).
    With respect to tax returns, the oral argument of this appeal precipitated
    further procedural developments, detailed in Trump v. Deutsche Bank, No. 19‒1540,
    
    2019 WL 5075948
     (2d Cir. Oct. 10, 2019) (order granting news organizations’
    motions to intervene and denying their motions to unseal). Ultimately, Deutsche
    43
    Bank informed us in an August 27, 2019, letter42 that it had two tax returns within
    the coverage of the Committees’ subpoenas and submitted the names of the two
    taxpayers under seal.
    If any tax returns in the possession of Deutsche Bank were those of the Lead
    Plaintiff, we would have to consider whether their production to the Committees
    might encounter the objection that it would distract the Chief Executive in the
    performance of official duties. That issue need not be resolved, however, because
    Deutsche Bank informed us, in its response to the motions of news organizations
    to unseal Deutsche Bank’s letter of August 27, that the only tax returns in its
    possession within the coverage of the subpoenas are not those of the Lead Plaintiff.
    Disclosure of tax returns in the possession of Deutsche Bank in response to
    the Committees’ subpoenas will not violate section 6103, and the fact that, when
    requested by news organizations, we did not unseal the names of the taxpayers
    whose returns are in the possession of Deutsche Bank is not a reason to exclude
    those returns from Deutsche Bank’s compliance with the subpoenas.
    42See Letter from Letter from Raphael A. Prober to Clerk of Court, Second Circuit Court
    of Appeals, No. 19‒1540, Dkt. No. 161 (redacted version) (Aug. 27, 2019); 
    id.,
     Dkt. No. 165
    (unredacted version filed under seal) (Aug. 27, 2019).
    44
    C. Constitutional Claim
    Appellants’ constitutional claim does not assert any constitutionally based
    privilege that might protect their financial records from production by the Banks
    to the Committees, such as the privileges secured in the Bill of Rights. See Watkins,
    
    354 U.S. at 198
     (recognizing “the restraints of the Bill of Rights upon congressional
    investigations”). Instead, Appellants contend that the Constitution places limits
    on the power of Congress to investigate, that the Committees’ subpoenas to the
    Banks exceed those limits, and that they have a right to prevent disclosure of
    documents in response to subpoenas beyond Congress’s power of investigation.
    The subpoenas are surely broad in scope. Illustrating the scope, Appellants
    specifically call our attention to the following requests in the Committees’
    subpoenas to Deutsche Bank for the following:
    “any document related to account applications, opening
    documents, KYC [know your customer], due diligence, and closing
    documents”;
    “any monthly or other periodic account statement”;
    “any document related to any domestic or international
    transfer of funds in the amount of $10,000 or more”;
    “any summary or analysis of domestic or international account
    deposits, withdrawals, and transfers”;
    “any document related to monitoring for, identifying, or
    evaluating possible suspicious activity”;
    45
    “any document related to any investment, bond offering, line
    of credit, loan, mortgage, syndication, credit or loan restructuring, or
    any other credit arrangement.”
    Deutsche Bank Subpoenas ¶¶ 1(i)‒(vi), J. App’x 37‒38.
    The documents sought are those of the Lead Plaintiff and his three oldest
    children, and “members of their immediate family,” defined to include child,
    daughter‐in‐law, and son‐in‐law, among others, and a number of entities affiliated
    with the Lead Plaintiff and the Trump Organization. 
    Id.
     at 37 ¶ 1, 47 ¶ 5. The
    documents concern financial transactions of the named individuals and their
    affiliated entities. The time frame for which most of the documents are sought is
    July 19, 2016, to the present for the Capital One subpoena and January 1, 2010, to
    the present for the Deutsche Bank subpoenas, but there is no time limit for two
    categories of documents sought by all three subpoenas. See id. at 37, intro., 52,
    intro. These categories include documents related to account openings, the names
    of those with interests in identified accounts, and financial ties between the named
    individuals and entities and any foreign individual, entity, or government. See id.
    at 37 ¶ 1(i), 41‒42 ¶ 6(i), 52 ¶¶ 1(i), (ii).
    Constitutional investigative authority of Congress. An important line of
    Supreme Court decisions, usually tracing back to McGrain v. Daugherty, 
    273 U.S. 46
    135 (1927), has recognized a broad power of Congress and its committees to obtain
    information in aid of its legislative authority under Article I of the Constitution.
    See Eastland v. United States Servicemen’s Fund, 
    421 U.S. 491
    , 504 (1975); Barenblatt,
    
    360 U.S. at 111
    ; Watkins, 
    354 U.S. at 187
    ; Quinn, 
    349 U.S. at 160
    ; Sinclair v. United
    States, 
    279 U.S. 263
    , 297 (1929), overruled on other grounds by United States v. Gaudin,
    
    515 U.S. 506
    , 519 (1995). “[T]he power of inquiry—with process to enforce it—is an
    essential and appropriate auxiliary to the legislative function.” McGrain, 273 U.S.
    at 174. “The scope of the power of inquiry, in short, is as penetrating and far‐
    reaching as the potential power to enact and appropriate under the Constitution.”
    Barenblatt, 
    360 U.S. at 111
    . “[T]he power to investigate is inherent in the power to
    make laws because ‘a legislative body cannot legislate wisely or effectively in the
    absence of information respecting the conditions which the legislation is intended
    to affect or change.’” Eastland, 
    421 U.S. at 504
     (brackets omitted) (quoting McGrain,
    273 U.S. at 175). “The power of the Congress to conduct investigations . . .
    encompasses inquiries concerning the administration of existing laws as well as
    proposed or possibly needed statutes.” Watkins, 
    354 U.S. at 187
    .43
    43Courts have recognized an additional, though less clearly delineated, source of
    Congress’s investigative authority, namely, Congress’s “informing function.” The Supreme
    Court has explained that although Congress cannot “expose for the sake of exposure,” it has the
    power “to inquire into and publicize corruption, maladministration or inefficiency in agencies of
    47
    As the Committees recognize, however, Congress’s constitutional power to
    investigate is not unlimited. The Supreme Court has identified several limitations.
    One concerns intrusion into the authority of the other branches of the government.
    In Kilbourn v. Thompson, 
    103 U.S. 168
     (1880), which the Supreme Court has
    identified as the first case in which the Court considered a challenge to “the use of
    compulsory process as a legislative device,” Watkins, 
    354 U.S. at 193
    , the Court
    ruled that Congress’s power to compel testimony was unconstitutionally used
    because the House of Representatives had “assumed a power which could only be
    properly exercised by another branch of the government,” in that case, the Judicial
    Branch, Kilbourn, 103 U.S. at 192.44
    In Quinn, the Supreme Court identified other limits. The power to
    investigate “must not be confused with any of the powers of law enforcement.”
    the Government” in order to inform the public “concerning the workings of its government.”
    Watkins, 
    354 U.S. at
    200 & n.33; see Rumely, 
    345 U.S. at 43
     (“‘It is the proper duty of a representative
    body to look diligently into every affair of government and to talk much about what it sees. . . .
    The informing function of Congress should be preferred even to its legislative function.’”)
    (quoting Woodrow Wilson, Congressional Government: A Study in American Politics 303 (1913)). We
    need not consider this potential source of investigative authority because we conclude that the
    Committees issued the subpoenas to advance valid legislative purposes.
    44 Kilbourn had been imprisoned by the sergeant‐at‐arms of the House of Representatives
    for contempt by refusing to respond to a House committee’s inquiries concerning matters that
    were then pending in a federal bankruptcy court. As the Supreme Court later explained in
    McGrain, the bankruptcy was a matter “in respect to which no valid legislation could be had”
    because the case was “still pending in the bankruptcy court” and “the United States and other
    creditors were free to press their claims in that proceeding.” 273 U.S. at 171.
    48
    
    349 U.S. at 161
    . “Nor does it extend to an area in which Congress is forbidden to
    legislate.” 
    Id.
     “Still further limitations on the power to investigate are found in the
    specific individual guarantees of the Bill of Rights . . . .” 
    Id.
     And, most pertinent to
    the pending appeal, the power to investigate “cannot be used to inquire into
    private affairs unrelated to a valid legislative purpose.” 
    Id.
    The principal argument of Appellants is that compliance with the
    Committees’ subpoenas should be preliminarily enjoined because the subpoenas
    seek information concerning their private affairs. Unquestionably, disclosure of
    the financial records sought by the Committees will subject Appellants’ private
    business affairs to the Committees’ scrutiny. However, inquiry into private affairs
    is not always beyond the investigative power of Congress. In Quinn, the Court was
    careful to state that the power to investigate “cannot be used to inquire into private
    affairs unrelated to a valid legislative purpose.” 
    Id.
     (emphasis added). In Barenblatt,
    the Court stated a similar qualification: “Congress may not constitutionally
    require an individual to disclose . . . private affairs except in relation to [a valid
    legislative] purpose.” 
    360 U.S. at 127
    .
    So, although the Court had made clear before Barenblatt that there is “no
    congressional power to expose for the sake of exposure,” Watkins, 
    354 U.S. at 200
    ,
    49
    it has also stated that inquiry into private affairs is permitted as long as the inquiry
    is related “to a valid legislative purpose,” Quinn, 
    349 U.S. at 161
    ; see Barenblatt, 
    360 U.S. at 127
    . This potential tension between a permissible legislative purpose and
    an impermissible inquiry for the sake of exposure requires consideration of the
    role of motive and purpose in assessing the validity of a congressional inquiry.
    The Supreme Court has spoken clearly as to motive with respect to a
    congressional       inquiry.     Referring      to     congressional      committee        members
    questioning a witness, the Court said, “[T]heir motives alone would not vitiate an
    investigation which had been instituted by a House of Congress if that assembly’s
    legislative purpose is being served.” Watkins, 
    354 U.S. at 200
     (emphasis added).45
    45 Watkins cites, 
    354 U.S. at
    200 n.34, among other cases, Eisler v. United States, 
    170 F.2d 273
    (D.C. Cir. 1948), in which the D.C. Circuit stated, “[D]efense counsel sought to introduce evidence
    to show that the Committee’s real purpose in summoning appellant was to harass and punish
    him for his political beliefs and that the Committee acted for ulterior motives not within the scope
    of its or Congress’ powers. The lower court properly refused to admit such evidence, on the
    ground that the court had no authority to scrutinize the motives of Congress or one of its
    committees.” 
    Id.
     at 278–79 (quotation marks and ellipsis omitted).
    In Tenney v. Brandhove, 
    341 U.S. 367
     (1951), the Supreme Court provided this caution to
    courts asked to consider legislators’ motives: “In times of political passion, dishonest or vindictive
    motives are readily attributed to legislative conduct and as readily believed. Courts are not the
    place for such controversies. Self‐discipline and the voters must be the ultimate reliance for
    discouraging or correcting such abuses. The courts should not go beyond the narrow confines of
    determining that a committee’s inquiry may fairly be deemed within its province.” 
    Id. at 378
    (footnote omitted).
    50
    More than 50 years ago, the Supreme Court candidly recognized the
    difficulty a court faces in considering how a legislative purpose is to be assessed
    when a privacy interest is asserted to prevent a legislative inquiry:
    “Accommodation of the congressional need for particular
    information with the individual and personal interest in privacy is an
    arduous and delicate task for any court. We do not underestimate the
    difficulties that would attend such an undertaking.”
    Id. at 198.
    Requirement of identifying legislative purpose. The first task for courts
    undertaking this “accommodation” is identification of the legislative purpose to
    which a congressional investigation is asserted to be related.
    “It is manifest that despite the adverse effects which follow upon
    compelled disclosure of private matters, not all such inquiries are
    barred. Kilbourn v. Thompson teaches that such an investigation into
    individual affairs is invalid if unrelated to any legislative purpose.”
    Id. Watkins provided further guidance as to how that inquiry as to legislative
    purpose should at least begin:
    “An essential premise in this situation is that the House or
    Senate shall have instructed the committee members on what they are
    to do with the power delegated to them. It is the responsibility of the
    Congress, in the first instance, to insure that compulsory process is
    used only in furtherance of a legislative purpose. That requires that
    the instructions to an investigating committee spell out that group’s
    jurisdiction and purpose with sufficient particularity. Those
    51
    instructions are embodied in the authorizing resolution. That
    document is the committee’s charter.”
    Id. at 201.
    It is not clear whether this passage can be satisfied only by the instruction
    that the House gives to a committee pursuant to a House rule defining a standing
    committee’s continuing jurisdiction, or whether a specific “authorizing
    resolution” is required for a committee to undertake an investigation on a
    particular subject within its jurisdiction. During an argument on July 12 of this
    year in the Court of Appeals for the District of Columbia Circuit in Trump v. Mazars
    USA, LLP, 
    940 F.3d 710
     (D.C. Cir.), reh’g en banc denied, 
    941 F.3d 1180
     (D.C. Cir.),
    mandate stayed, No. 19A545, 
    2019 WL 6328115
     (U.S. Nov. 25, 2019) (“Trump v.
    Mazars”), a challenge to a subpoena issued by the House Committee on Oversight
    and Reform,46 the Mazars appellants, many of whom are Appellants here,
    contended that a clear statement from the House authorizing a standing
    46  The subpoena challenged in Mazars seeks four categories of documents somewhat
    different from those sought by the subpoenas challenged on this appeal, and seeks the documents
    for purposes significantly different from the Committees’ purposes, as we point out infra. The
    categories are: various financial statements and reports compiled by Mazars USA, LLP,
    engagement agreements for preparation of such statements and reports, supporting documents
    used in the preparation of such statements and reports, and memoranda, notes, and
    communication related to the compilation and auditing of such statements and reports. See Decl.
    of William S. Consovoy, Ex. A at 3, Trump v. Committee on Oversight and Reform of the United States
    House of Representatives, 
    380 F. Supp. 3d 76
     (D.D.C. 2019) (No. 19‐cv‐01136 (APM)), ECF No. 9‐2,
    aff’d, Trump v. Mazars USA, LLP, 
    940 F.3d 710
     (D.C. Cir. 2019).
    52
    committee to investigate not just a particular subject but the particular subpoena
    being challenged was required, at least where the subpoena seeks papers of the
    President. See Oral Arg. at 8:35, 1:32:15, 2:03:15, Trump v. Mazars USA, LLP, No. 19‐
    5142 (D.C. Cir. July 12, 2019).47
    Apparently responding to that contention, the House of Representatives on
    July 24 adopted a resolution that includes the following language:
    “Resolved, That the House of Representatives ratifies and
    affirms all current and future investigations, as well as all subpoenas
    previously issued or to be issued in the future, by any standing or
    permanent select committee of the House, pursuant to its jurisdiction
    as established by the Constitution of the United States and rules X and
    XI of the Rules of the House of Representatives, concerning or issued
    directly or indirectly to—
    (1) the President in his personal or official capacity;
    (2) his immediate family, business entities, or
    organizations;
    ...
    (9) any third party seeking information involving,
    referring, or related to any individual or entity described in
    paragraphs (1) through (7).”
    H.R. Res. 507, 116th Cong. (2019); see H.R. Res. 509, 116th Cong. § 3 (2019) (“House
    Resolution 507 is hereby adopted.”).48 On July 26, the Committees informed us of
    47   Appellants have not made that “clear statement” argument in their briefs in this case.
    48   H.R. Res. 507 disclaims the need for its adoption, stating:
    “Whereas the validity of some of [the pending] investigations and subpoenas
    [relating to the President] has been incorrectly challenged in Federal court
    on the grounds that the investigations and subpoenas were not authorized
    53
    this resolution.49
    On July 31, counsel for the Mazars appellants made two related arguments
    to the D.C. Circuit rejecting the significance of Resolution 507.50 First, he read the
    passage from Watkins, quoted above, to mean that only the House Rules initially
    outlining a committee’s jurisdiction can provide a valid source of authority for a
    legislative investigation. Second, he contended that two decisions, United States v.
    Rumely, 
    345 U.S. 41
     (1953), and Shelton v. United States, 
    327 F.2d 601
     (D.C. Cir. 1963),
    establish that Resolution 507 came “too late.” On August 1, counsel for Appellants
    in our appeal made the same arguments to our Court.51
    by the full House and lacked a ‘clear statement’ of intent to include the
    President, which the President’s personal attorneys have argued in Federal
    court is necessary before the committees may seek information related to the
    President; and
    “Whereas while these arguments are plainly incorrect as a matter of law, it is
    nevertheless in the interest of the institution of the House of Representatives
    to avoid any doubt on this matter and to unequivocally reject these
    challenges presented in ongoing or future litigation.”
    H.R. Res. 507.
    49 See Letter from Douglas N. Letter, General Counsel, U.S. House of Representatives, to
    Clerk of Court, Second Circuit Court of Appeals, No. 19‒1540, Dkt. No. 106 (July 26, 2019).
    50 See Letter from William S. Consovoy, counsel for President Donald J. Trump, to Mark
    Langer, Clerk of Court, D.C. Circuit Court of Appeals, Trump v. Mazars USA, LLP, No. 19‒5142,
    Doc. No. 1799866 (D.C. Cir. July 31, 2019).
    51 See Letter from Patrick Strawbridge, counsel for President Donald J. Trump, to Clerk of
    Court, Second Circuit Court of Appeals, No. 19‒1540, Dkt. No. 112 (Aug. 1, 2019).
    On August 6, the United States filed in the Mazars appeal an amicus curiae brief, making
    additional arguments concerning the alleged deficiency of Resolution 507. We need not set forth
    those arguments because on August 19 the United States filed an amicus curiae brief in the
    54
    Although we agree that there must be sufficient evidence of legislative
    authorization and purposes to enable meaningful judicial review, Appellants’
    arguments that seek to limit evidence we may consider are not persuasive.
    Although Watkins examined the authorizing resolutions of the committee whose
    authority to compel answers to its inquiry was being challenged, see 
    354 U.S. at
    201–02 & nn. 35–36, the Supreme Court’s opinion reveals that these resolutions are
    not the only sources to be considered in determining whether a committee’s
    investigation has been validly authorized. As the Court noted, “There are several
    sources that can outline the ‘question under inquiry.’” 
    Id. at 209
    . Among these, the
    Court mentioned “the remarks of the [committee] chairman or members of the
    committee, or even the nature of the proceedings themselves.” 
    Id.
     Indeed, the
    Court considered the opening statement of the chairman of the committee before
    whom the defendant in a criminal contempt proceeding had refused to answer, see
    
    id.
     at 209–10, although finding the statement impermissibly vague, see 
    id. at 210
    ;
    see also Shelton v. United States, 
    404 F.2d 1292
    , 1297 (D.C. Cir. 1968) (statements of
    committee members relevant to identification of purposes of congressional
    investigations).
    pending appeal, making additional arguments concerning Resolution 507 as it relates to the
    subpoenas in the pending litigation. We consider those arguments infra.
    55
    Rumely does not confine the search for authorization of a valid legislative
    purpose to a committee’s jurisdictional resolution. The Court concluded that the
    witness’s “duty to answer must be judged as of the time of his refusal.” Rumely,
    
    345 U.S. at 48
    . Because we regard the time of the Banks’ compliance with the
    subpoenas challenged in this case as the equivalent of the time of the witness’s
    refusal in Rumely, that decision is no bar to examining legislative materials existing
    before such compliance.
    Furthermore, the Court’s point in Rumely was that the scope of the
    resolution authorizing the committee’s investigation could not “be enlarged by
    subsequent action of Congress.” 
    345 U.S. at 48
    . In the pending case, the issue with
    respect to House Resolution 507 is whether this Court, in ascertaining House
    authorization of the Committees’ investigations, can consider evidence that comes
    after the issuance of the subpoenas. Including House Resolution 507 in our
    consideration results in no unfairness to the Banks, which have not refused to
    produce the information requested. Moreover, House Resolution 507 does not
    suffer from the same “infirmity of post litem motam, self‐serving declarations” that
    tainted the post hoc debate in Rumely, 
    345 U.S. at 48
    , because the resolution does
    not purport to alter either the interpretation of the Committees’ jurisdiction or the
    56
    stated purposes of the Committees’ investigations that existed at the time the
    subpoenas were issued. Rather, the resolution was passed to eliminate any doubt
    regarding the support of the House for the Committees’ investigations.
    The D.C. Circuit’s decision in Shelton states that the time a contempt witness
    is entitled to know the purpose of a challenged legislative inquiry is “before the
    subpoena issued.” 
    327 F.2d at 607
    . Preliminarily, we note that this assertion is
    dictum; the holding is that the committee’s subpoena was invalid because of
    procedural irregularity in its issuance.52 See 
    id.
     More important, that dictum
    conflicts with what the Supreme Court said in Watkins. The Court there made clear
    that to satisfy the due process objection arising from a contempt imposed for
    refusing to answer a committee’s question insufficiently shown to be related to a
    valid legislative purpose, the purpose could be identified as late as immediately
    before the witness was required to answer. “Unless the subject matter has been
    made to appear with undisputable clarity, it is the duty of the investigative body,
    upon objection of the witness on grounds of pertinency, to state for the record the
    52   The D.C. Circuit explained that the relevant Senate resolution “imposes on the
    Subcommittee itself” the “function of calling witnesses,” and that “the whole function of
    determining who the witnesses would be was de facto delegated to the Subcommittee counsel.”
    Shelton, 
    327 F.2d at 606
    .
    57
    subject under inquiry at that time and the manner in which the propounded
    questions are pertinent thereto.” Watkins, 
    354 U.S. at
    214–15.
    We therefore do not confine our search for the Committees’ purposes to the
    House Rules alone, nor do we exclude Resolution 507 from our inquiry.
    Identifying the Committees’ legislative purpose. We next consider the
    “legislative purpose” to which the Committees assert their investigations are
    “related” and “the weight to be ascribed to[] the interest of the Congress in
    demanding disclosures” in order to determine whether “a public need” for such
    investigation “overbalances any private rights affected.” 
    Id. at 198
    .
    Our consideration begins with the Constitution, which assigns to each house
    of Congress authority to “determine the Rules of its Proceedings.” U.S. Const. art.
    I, § 5, cl. 2. In 2019, Congress adopted the Rules of the House of Representatives.
    See H.R. Res. 6, 116th Cong. (2019); Rules of the House of Representatives, 116th
    Cong. (prepared by Karen L. Haas, Clerk of the House of Representatives, Jan. 11,
    2019) (hereinafter “H. Rules”). House Rule X establishes the standing committees
    of the House, including the Financial Services Committee and the Permanent
    Select Committee on Intelligence. See H. Rules X(2)(h), X(11). Rule X assigns to the
    Financial Services Committee jurisdiction over bills concerning, among other
    58
    things, banks and banking, international finance, and money and credit, see H.
    Rule X (1)(h)(1), (h)(5), (h)(7), and assigns to the Intelligence Committee
    jurisdiction over bills concerning, among other things, the Nation’s intelligence
    agencies and their intelligence and intelligence‐related activities, see H. Rule
    X(11)(b)(1)(A), (B).
    Rule X also assigns to all of the standing committees “general oversight
    responsibilities . . . to assist the House in its analysis, appraisal, and evaluation of
    (A) the application, administration, execution, and effectiveness of Federal laws;
    and (B) conditions and circumstances that may indicate the necessity or
    desirability of enacting new or additional legislation.” H. Rule X(2)(a)(1). In
    addition, Rule X assigns to the Intelligence Committee “[s]pecial oversight
    functions” to “review and study on a continuing basis laws, programs, and
    activities of the intelligence community.” H. Rule X(3)(m).
    House Rule XI provides: “Each committee may conduct at any time such
    investigations and studies as it considers necessary or appropriate in the exercise
    of its responsibilities under [R]ule X.” H. Rule XI(1)(b)(1). Rule XI also provides:
    “For the purpose of carrying out any of its functions and duties under
    this rule and [R]ule X . . . a committee or subcommittee is authorized
    . . . to require, by subpoena . . . the production of such . . . records . . .
    as it considers necessary.”
    59
    H. Rule XI(2)(m)(1)(B).
    On March 13, 2019, the House of Representatives adopted a resolution
    stating, among other things, that the House “supports efforts to close loopholes
    that allow corruption, terrorism, and money laundering to infiltrate our country’s
    financial system.” H.R. Res. 206, 116th Cong. (Mar. 13, 2019).
    On April 12, 2019, the House Committee on Oversight and Reform issued a
    report summarizing the subjects that several committees planned to investigate
    during the 116th Congress. See H.R. Rep. No. 116‐40 (2019). Because the date of
    this report is one day after issuance of the subpoenas challenged in this case, we
    note that the text of the report makes clear that the plans submitted by the
    committees had been received prior to the date the report was issued.53
    The plan submitted by the Financial Services Committee includes as its
    purposes: “examining financial regulators’ supervision of the banking, thrift and
    credit union industries for safety and soundness and compliance with laws and
    53The report explains that under House Rule X, the Oversight Committee “is to review
    the various plans and, in consultation with the Speaker, the Majority Leader, and the Minority
    Leader, report to the House the oversight plans along with any recommendations that the House
    leadership and the Committee may have to ensure effective coordination. Pursuant to this rule,
    the Committee on Oversight and Reform has reviewed and consulted with House leadership
    about the oversight plans of the standing House committees for the 116th Congress.” H.R. Rep.
    No. 116‐40 at 2.
    60
    regulations,” id. at 78; “the implementation, effectiveness, and enforcement of anti‐
    money laundering/counter‐financing of terrorism laws and regulations,” id. at 84
    (abbreviation omitted); and “the risks of money laundering and terrorist financing
    in the real estate market,” id. at 85.
    The Chair of the Financial Services Committee, Representative Maxine
    Waters, has identified a principal purpose of that committee’s investigation. “The
    movement of illicit funds throughout the global financial system raises numerous
    questions regarding the actors who are involved in these money laundering
    schemes and where the money is going.” 165 Cong. Rec. H2697, H2698 (daily ed.
    Mar. 13, 2019) (statement of Rep. Waters in support of H.R. Res. 206). Linking the
    Committee’s inquiries to Appellants, she explained that her concerns are
    “precisely why the Financial Services Committee is investigating the questionable
    financing provided to President Trump and [t]he Trump Organization by banks
    like Deutsche Bank to finance its real estate properties.” Id. In her statement, Rep.
    Waters noted that Deutsche Bank was fined for its role in a $10 billion money‐
    laundering scheme, 165 Cong. Rec. at H2698, and the Committees note in their
    brief, Br. for Intervenors at 11, that Capital One agreed to pay a fine of $100 million
    for failing to correct deficiencies in its Bank Secrecy Act and anti‐money‐
    61
    laundering programs, see Capital One, N.A., Enforcement Action No. 2018‐080, 
    2018 WL 5384428
    , at *1‒2 (O.C.C. Oct. 23, 2018).
    The Financial Services Committee has held hearings on these matters,54 and
    considered bills to combat financial crimes, such as money laundering.55
    The Chair of the Intelligence Committee has identified several purposes of
    that committee’s investigation. The committee is investigating “[t]he scope and
    scale of the Russian government’s operations to influence the U.S. political
    process”; “[t]he extent of any links and/or coordination between the Russian
    government, or related foreign actors, and individuals associated with Donald
    Trump’s campaign, transition, administration, or business interests, in furtherance
    of the Russian government’s interests”; “[w]hether any foreign actor has sought to
    compromise or holds leverage, financial or otherwise, over Donald Trump, his
    family, his business, or his associates”; and “[w]hether President Trump, his
    54  Implementation of FinCEN’s Customer Due Diligence Rule—Regulator Perspective: Hearing
    Before the Subcomm. on Terrorism & Illicit Finance of the H. Comm. on Financial Services, 115th Cong.
    (2018); Examining the BSA/AML Regulatory Compliance Regime: Hearing Before the Subcomm. on
    Financial Institutions & Consumer Credit of the H. Comm. on Financial Services, 115th Cong. (2017).
    55 See Corporate Transparency Act of 2019, H.R. 2513, 116th Cong. (bill to reform corporate
    beneficial ownership disclosures and increase transparency); COUNTER Act of 2019, H.R. 2514,
    116th Cong. (bill to strengthen the Bank Secrecy Act and anti‐money‐laundering laws); Vladimir
    Putin Transparency Act, H.R. 1404, 116th Cong. (as passed by House, Mar. 12, 2019) (bill to
    require Executive Branch agencies to submit assessment to Congress regarding financial holdings
    of Russian President Vladimir Putin and top Kremlin‐connected oligarchs).
    62
    family, or his associates are or were at any time at heightened risk of, or vulnerable
    to, foreign exploitation, inducement, manipulation, pressure, or coercion.” Press
    Release, House Permanent Select Committee on Intelligence, Chairman Schiff
    Statement on House Intelligence Committee Investigation (Feb. 6, 2019).56
    Linking these investigations to Appellants, the Committees cite public
    reports indicating that Deutsche Bank has extended loans to the Lead Plaintiff
    totaling more than $2 billion57 and that his 2017 financial disclosure report showed
    a liability of at least $130 million to Deutsche Bank.58 At oral argument, counsel for
    the Committees represented, without contradiction by Appellants, that Deutsche
    Bank is the only bank willing to lend to the Lead Plaintiff. See Oral Arg. Tr. at p.
    36, ll. 5‒18.
    On this appeal, the Committees contend that the Intelligence Committee’s
    investigations “will inform numerous legislative proposals to protect the U.S.
    56 https://intelligence.house.gov/news/documentsingle.aspx?DocumentID=447.
    57 David Enrich, Deutsche Bank and Trump: $2 Billion in Loans and a Wary Board, N.Y. Times,
    Mar.     18,      2019,     https://www.nytimes.com/2019/03/18/business/deutsche‐bank‐donald‐
    trump/html.
    58 Donald J. Trump, President, Executive Branch Personnel Public Financial Disclosure
    Report for 2017 (Office of Government Ethics Form 278e) at 45 (May 15, 2018).
    63
    political process from the threat of foreign influence and strengthen national
    security.” Br. for Committees at 18.59
    All of the foregoing fully identifies “the interest[s] of the Congress in
    demanding disclosures,” as Watkins requires. 
    354 U.S. at 198
    . The Committees’
    interests concern national security and the integrity of elections, and, more
    specifically,    enforcement        of    anti‐money‐laundering/counter‐financing                of
    terrorism laws, terrorist financing, the movement of illicit funds through the global
    financial system including the real estate market, the scope of the Russian
    government’s operations to influence the U.S. political process, and whether the
    Lead Plaintiff was vulnerable to foreign exploitation. Watkins also requires that a
    legislative inquiry must in fact be related to a legislative purpose.60 See 
    id.
     The
    Committees have fully satisfied the requirements of Watkins.
    59  The Committees cite as examples the following bills: Duty to Report Act, H.R. 2424,
    116th Cong. (2019) (bill to require campaign officials to notify law enforcement if offered
    assistance by foreign nationals and to report all meetings with foreign agents); KREMLIN Act,
    H.R. 1617, 116th Cong. (as passed by House, Mar. 12, 2019) (bill to require Director of National
    Intelligence to submit to Congress intelligence assessments of Russian intentions relating to
    North Atlantic Treaty Organization and Western allies); Strengthening Elections Through
    Intelligence Act, H.R. 1474, 116th Cong. (2019) (bill to require an intelligence threat assessment
    prior to every federal general election); For the People Act of 2019, H.R. 1, 116th Cong. (as passed
    by House, Mar. 8, 2019) (bill to improve election security and oversight and provide for national
    strategy and enforcement to combat foreign interference).
    60 The Court had previously said in Quinn that the power to investigate “cannot be used
    to inquire into private affairs unrelated to a valid legislative purpose.” 
    349 U.S. at 161
     (emphasis
    added).
    64
    We conclude our consideration of the Committees’ identification of valid
    legislative purposes by noting the significantly different purposes that were
    identified by the House Committee on Oversight and Reform in the Trump v.
    Mazars case in the District of Columbia,61 to which we previously alluded.62 The
    four subject matters being investigated by that committee, set out in the margin,63
    all explicitly concerned whether the President was in compliance with legal
    61
    After the D.C. Circuit’s decision in Mazars, Appellants and the Committees sent letters
    to this Court, reporting and commenting on that decision. See Letter from Patrick Strawbridge,
    counsel for President Donald J. Trump, to Clerk of Court, Second Circuit Court of Appeals, No.
    19‒1540, Dkt. No. 202 (Oct. 14, 2019); Letter from Douglas N. Letter, General Counsel, U.S. House
    of Representatives, to Clerk of Court, Second Circuit Court of Appeals, No. 19‒1540, Dkt. No. 201
    (Oct. 11, 2019). In view of the D.C. Circuit’s ruling affirming the denial of an injunction to prohibit
    compliance with the subpoena there challenged, Appellants’ letter stating that “the Mazars
    majority agreed that the subpoenas here are unconstitutional” presses the limits of advocacy. The
    Committees’ letter states, “This Court should join the D.C. Circuit in upholding the validity of
    the subpoenas at issue here.”
    62 See footnote 46, p. 52.
    63 As stated by Chairman Cummings:
    “The Committee has full authority to investigate [1] whether the President
    may have engaged in illegal conduct before and during his tenure in office,
    [2] to determine whether he has undisclosed conflicts of interest that may
    impair his ability to make impartial policy decisions, [3] to assess whether
    he is complying with the Emoluments Clauses of the Constitution, and [4]
    to review whether he has accurately reported his finances to the Office of
    Government Ethics and other federal entities. The Committee’s interest in
    these matters informs its review of multiple laws and legislative proposals
    under our jurisdiction, and to suggest otherwise is both inaccurate and
    contrary to the core mission of the Committee to serve as an independent
    check on the Executive Branch.”
    Memorandum from Elijah E. Cummings, Chairman, House Comm. on Oversight & Reform, to
    Members of the Comm. on Oversight & Reform 4 (Apr. 12, 2019).
    65
    requirements. Nevertheless, Judge Tatel’s opinion for the Mazars majority
    concluded that the Oversight Committee, in issuing the challenged subpoena,
    “was engaged in a ‘legitimate legislative investigation,’ rather than an
    impermissible law‐enforcement inquiry.” Mazars, 940 F.3d at 732 (quoting
    Hutcheson v. United States, 
    369 U.S. 599
    , 618 (1962)) (citation omitted). On the other
    hand, Judge Rao’s dissent contended that because the Oversight Committee was
    investigating whether the President violated various laws, its “investigations may
    be pursued exclusively through impeachment.”64 Id. at 751.
    In the pending appeal, the Committees are not investigating whether the
    Lead Plaintiff has violated any law. To the extent that the Committees are looking
    into unlawful activity such as money laundering, their focus is not on any alleged
    misconduct of the Lead Plaintiff (they have made no allegation of his misconduct);
    instead, it is on the existence of such activity in the banking industry, the adequacy
    of regulation by relevant agencies, and the need for legislation.
    Whether legislative purpose “overbalances” private rights. The Supreme Court
    can be understood in Watkins to have set out a second requirement for courts
    considering challenges to legislative inquiries.
    We note that neither the principal nor the reply brief of Appellants mentions the word
    64
    “impeachment.”
    66
    “The critical element is the existence of, and the weight to be ascribed
    to, the interest of the Congress in demanding disclosures from an
    unwilling witness. We cannot simply assume, however, that every
    congressional investigation is justified by a public need that overbalances
    any private rights affected. To do so would be to abdicate the
    responsibility placed by the Constitution upon the judiciary to insure
    that the Congress does not unjustifiably encroach upon an
    individual’s right to privacy . . . .”
    
    354 U.S. at
    198–99 (emphasis added).
    When the Court said that it “cannot simply assume, however, that every
    congressional investigation is justified by a public need that overbalances any
    private rights affected,” 
    id. at 198
    , the inference is available that courts are to
    determine whether the importance of the legislative interest outweighs an
    individual’s privacy interests.
    Three considerations diminish the force of this possible inference. First, we
    should be hesitant to conclude that the Supreme Court, always sensitive to
    separation‐of‐powers concerns, would want courts to make this sort of balancing
    determination, the outcome of which might impede the Legislative Branch in
    pursuing its valid legislative purposes. Second, the Court might simply have
    meant that courts should not “assume” the existence of a legislative purpose, but
    that the judicial task is at an end once courts find in congressional materials
    sufficient identification of the valid legislative purposes that Congress or a
    67
    committee is pursuing. Third, the Court later cautioned that “courts should not go
    beyond the narrow confines of determining that a committee’s inquiry may fairly
    be deemed within its province.” Eastland, 
    421 U.S. at 506
     (quotation marks
    omitted). On the other hand, it is not likely that the Court would have described
    such a minimalist approach as “an arduous and delicate task.” Watkins, 
    354 U.S. at 198
    .
    Encountering this uncertainty as to the task that Watkins has required courts
    to undertake, we will assume, for the argument, that we should make at least some
    inquiry as to whether the “public need” to investigate for the valid legislative
    purposes we have identified “overbalances any private rights affected.” That
    balancing is similar to the comparison of hardships we make in Part IV, one of the
    factors relevant to two of the preliminary injunction standards.
    We conclude that, even if Watkins requires balancing after valid legislative
    purposes have been identified, the interests of Congress in pursuing the
    investigations for which the challenged subpoenas were issued substantially
    “overbalance” the privacy interests invaded by disclosure of financial documents,
    including the non‐official documents of the Lead Plaintiff. “[T]he weight to be
    ascribed to” the public need for the investigations the Committees are pursuing is
    68
    of the highest order. The legislative purposes of the investigations concern
    national security and the integrity of elections, as detailed above. By contrast, the
    privacy interests concern private financial documents related to businesses,
    possibly enhanced by the risk that disclosure might distract the President in the
    performance of his official duties.
    Whether the subpoenas seek information related to legislative purposes. The
    remaining issue is whether the information sought by the subpoenas is sufficiently
    related to the identified legislative purposes supporting the Committees’
    investigations, or whether the subpoenas are overbroad, as Appellants contend.
    Their challenge proceeds along three lines: (1) a procedural objection concerning
    the District Court, (2) several general substantive objections to the entire scope of
    the subpoenas, and (3) a more focused substantive objection to several specific
    categories of information sought by the subpoenas.
    Procedural objection‒‒District Court’s not requiring negotiation. Appellants
    contend that the District Court erred procedurally by not “send[ing] the parties
    back to the negotiating table” to attempt to narrow the scope of the subpoenas. Br.
    for Appellants at 29. Judge Livingston favors that disposition. Part. Diss. Op. at 11,
    56. Indeed, that is an additional point of her partial dissent, which takes no
    69
    position on the merits of any of Appellants’ claims, deferring decision until such
    negotiation occurs. Judge Livingston also favors a total remand for further
    development of the record.
    Appellants cite two instances where courts have had at least partial success
    in encouraging such negotiation. See AT&T II, 
    567 F.2d at
    124–25; Bean LLC v. John
    Doe Bank, 
    291 F. Supp. 3d 34
    , 39–40 (D.D.C. 2018). Both cases arose in significantly
    different circumstances, and neither one requires a total remand here. The AT&T
    litigation involved what the D.C. Circuit characterized as “a portentous clash
    between the [E]xecutive and [L]egislative [B]ranches,” AT&T I, 
    551 F.2d at 385
    . In
    the pending appeal, as we have noted, the Lead Plaintiff is suing only in his
    individual capacity, not as President, and no official documents are sought. The
    only Executive Branch interest implicated is the possible distraction of the
    President in the performance of his duties, which we consider at pages 90‒91.
    Furthermore, AT&T I concerned national security wiretaps, Executive Branch
    official documents of obvious sensitivity. Finally, the D.C. Circuit’s advice in
    AT&T I was offered after the parties had already “negotiated extensively and came
    close to agreement.” 
    Id. at 394
    . The Court simply urged the parties to continue the
    process they had successfully begun and “requested” the parties “to attempt to
    70
    negotiate a settlement,” 
    id. at 395
    , because the “precise details of the [earlier]
    negotiations . . . demonstrate[d] the proximity of the parties to a workable
    compromise,” 
    id. at 386
    . The Bean litigation concerned a subpoena challenged as
    violative of the First Amendment. See 291 F. Supp. 3d at 37.
    To the extent that the request for judicial assistance in narrowing the scope
    of the subpoenas is analogous to the role of district court judges managing pretrial
    discovery, they have broad discretion to determine the extent to which they should
    intervene, see, e.g., In re Fitch, Inc., 
    330 F.3d 104
    , 108 (2d Cir. 2003), and Judge Ramos
    did not exceed such discretion in this case by leaving any negotiation in the hands
    of experienced counsel prior to his ruling. In favoring a total remand, Judge
    Livingston does not consider our limited standard of review of the District Court’s
    decision not to require the parties to negotiate, nor does she suggest that the
    District Court’s discretion was exceeded. Moreover, Appellants have not
    identified a single category of documents sought or even a single document within
    a category that they might be willing to have the Banks produce if a negotiation
    had been required. Finally, we note the likely futility of ordering a total remand
    for negotiation, as Judge Livingston prefers,65 in view of the fact that the White
    65Judge Livingston reports that at oral argument the Committees “affirmed a willingness
    to negotiate on an expedited basis, if requested by this Court.” Part. Diss. Op. at 11. The colloquy
    71
    House has prohibited members of the Administration from even appearing in
    response to congressional subpoenas and has informed Congress that “President
    Trump and his Administration cannot participate” in congressional inquiries.66
    Judge Livingston suggests that a total remand would be useful to afford the
    parties an opportunity for further development of the record. However,
    Appellants have given no indication of what additional materials they would seek
    to add to the record, and the existing record fully suffices for disposition of this
    appeal.
    to which Judge Livingston refers arose in response to a hypothetical inquiry from the Court as to
    whether certain sensitive documents such as a check for medical services should be excluded
    from disclosure. Counsel for the Committees responded that as to any documents “that have
    nothing to do with Mr. Trump and his family and these other businesses, his various businesses,
    have nothing to do with their real financial activities, we will direct Deutsche Bank not to produce
    those.” Oral Arg. Tr. at p. 41, ll. 11‒15. When the Court inquired further about the Committees’
    position if the Court were to insist on exclusion of such documents, counsel for the Committees
    responded, “[I]f this Court orders ‘these subpoenas are enforceable but’ ‒‒ and drew this
    exception, consistent with the hypothetical your Honor has raised, we would have no problem
    with that.” Id. at p. 41, ll. 22‒25. Obviously, the Committees’ willingness to comply with an order
    from this Court concerning exclusion of sensitive documents like a check for payment of medical
    expenses does not affirm the Committees’ willingness to engage in negotiation. Later, the
    Committees said that “[i]f this court thinks there should be negotiation, . . . make it really, really
    fast,” id at p. 46, ll. 8‒10, and added, “Mr. Trump and the various other people have given no
    indication whatsoever that they actually would be willing to negotiate over ― in any way that is
    serious.” Id. at p. 46, ll. 17‒19. Again, there is no expression of a willingness to negotiate.
    In any event, the limited remand we order provides an opportunity for exemption from
    disclosure of more documents than even those we have labeled “sensitive.”
    66 See Letter from Pat A. Cippolone, Counsel to the President, the Speaker of the House of
    Representatives,        and      three    House       committee     chairmen      (Oct.    8,   2019),
    https://www.nytimes.com/interactive/2019/10/08/us/politics/white‐house‐letter‐impeachment.
    html. One recipient of this letter, Congressman Adam Schiff, is the chairman of one of the
    committees that issued subpoenas in this litigation.
    72
    A total remand would simply further delay production of documents in
    response to subpoenas that were issued seven months ago and would run directly
    counter to the Supreme Court’s instruction that motions to enjoin a congressional
    subpoena should “be given the most expeditious treatment by district courts
    because one branch of Government is being asked to halt the functions of a
    coordinate branch.” Eastland, 
    421 U.S. at
    511 n.17.
    General substantive objections to scope of subpoenas. One broad substantive
    challenge to the scope of the subpoenas is that they focus on the Lead Plaintiff.67
    This point is made in support of the broader argument that the subpoenas were
    issued with the expectation that some of the documents sought would embarrass
    67  In the District Court, the Committees stated, “Because of his prominence, much is
    already known about Mr. Trump, his family, and his business, and this public record establishes
    that they serve as a useful case study for the broader problems being examined by the
    Committee.” Opposition of Intervenors to Plaintiffs’ Motion for a Preliminary Injunction at 16,
    Dist. Ct. Dkt. No. 51 (May 10, 2019). Appellants repeatedly point to the phrase “case study” to
    argue that the Committees are not only focusing on the Lead Plaintiff but also doing so for law
    enforcement purposes. Br. for Appellants at 5, 11, 15, 31, 33, 50. However, as long as valid
    legislative purposes are duly authorized and being pursued by use of the challenged subpoenas,
    the fact that relevant information obtained also serves as a useful “case study” does not detract
    from the lawfulness of the subpoenas. Furthermore, congressional examination of whether
    regulatory agencies are properly monitoring a bank’s practices does not convert an inquiry into
    impermissible law enforcement, and neither committee has made any allegation that the Lead
    Plaintiff or any of the Appellants has violated the law.
    Moreover, when a borrower can obtain loans from only one bank, that bank has already
    lent the borrower $130 million, and that bank has been fined in connection with a $10 billion
    money laundering scheme, that situation is appropriate for a case study of such circumstances by
    a congressional committee authorized to monitor how well banking regulators are discharging
    their responsibilities and whether new legislation is needed.
    73
    the President, rather than advance a legitimate legislative purpose. One answer to
    the complaint about targeting the Lead Plaintiff and his family is that the
    Committees have represented that the three subpoenas at issue in this litigation
    are among a group of subpoenas “to seven other financial institutions, the majority
    of which do not request documents specific to” the Lead Plaintiff. Br. for
    Committees at 9.68 In fact, the Deutsche Bank Subpoenas themselves seek
    documents from entities not related to Appellants. See Deutsche Bank Subpoenas
    ¶¶ 2‒6, J. App’x 40‒42. Another answer to the targeting objection is the significant
    relationship between Deutsche Bank and the Lead Plaintiff. The Committees have
    relied on information (not disputed by Appellants) indicating that when no other
    bank would extend credit to the Lead Plaintiff, Deutsche Bank loaned him or his
    affiliated entities at least $130 million dollars. That unusual circumstance
    adequately supports requests for information to determine whether proper
    banking procedures have been followed.
    68
    Replying to this assertion by the Committees, the amicus brief of the United States says,
    “The bare fact that a ‘majority’ of other subpoenas may not be confined to the President’s
    information hardly suggests that the present subpoenas are part of a general inquiry into reforms
    of the financial system, in which the President and his family have been caught up merely by
    chance . . . .” Br. for Amicus United States at 21 (emphases in original). The Committees make no
    claim that the subpoenas seek financial records of the Lead Plaintiff, his family, and his business
    entities “by chance.” As we have recounted, the Committees have explicitly set out the
    circumstances that make the financial records of the Lead Plaintiff and affiliated persons and
    business entities appropriate subjects for legislative inquiry.
    74
    To whatever extent the targeting objection is really a claim that part of the
    motive of some members of the Committees for issuing the three subpoenas was
    to embarrass the Lead Plaintiff, the Supreme Court has made it clear that in
    determining the lawfulness of a congressional inquiry, courts “do not look to the
    motives alleged to have prompted it.” Eastland, 
    421 U.S. at 508
    . The Court had
    earlier said, “So long as Congress acts in pursuance of its constitutional power, the
    Judiciary lacks authority to intervene on the basis of the motives which spurred
    the exercise of that power.” Barenblatt, 
    360 U.S. at 132
     (citations omitted).
    In this respect, the guiding principle is the same as that applicable when an
    arrest supported by probable cause is ruled valid despite the arresting officer’s
    motive to retaliate against a suspect for exercising a First Amendment right. See
    Nieves v. Bartlett, 
    139 S. Ct. 1715
    , 1725 (2019); see also Hartman v. Moore, 
    547 U.S. 250
    ,
    265‒66 (2006) (absence of probable cause required for valid claim of initiating
    prosecution to retaliate against a defendant for exercising a First Amendment
    right).
    But Appellants disclaim any objection based on inquiry into motive. “No
    aspect of this inquiry involves a search for Congress’s hidden ‘motives.’” Br. for
    Appellants at 26. Their point is that various statements of some members of
    75
    Congress reveal that the purpose of the investigations is to embarrass the President,
    not merely that such embarrassment was the motive for the investigations. In this
    context (as in some others69), the distinction between motive, i.e., the reason for
    acting, and purpose, i.e., the result sought, becomes somewhat blurred. We do not
    doubt that some members of the Committees, even as they pursued investigations
    for valid legislative purposes, hoped that the results of their inquiries would
    embarrass the President.70 But as long as the valid legislative purposes that the
    Committees have identified are being pursued and are not artificial pretexts for
    ill‐motivated maneuvers, the Committees have not exceeded their constitutional
    authority. The Supreme Court has stated that there is a “presumption” that the
    stated legislative purposes are the “real object” of the Committees’ investigation.
    McGrain, 273 U.S. at 178. We need not rely on that presumption where we have
    69  See, e.g., Mobile v. Bolden, 
    446 U.S. 55
    , 62 (1980) (“Our decisions, moreover, have made
    clear that action by a State that is racially neutral on its face violates the Fifteenth Amendment
    only if motivated by a discriminatory purpose.”); see generally Andrew Verstein, The Jurisprudence
    of Mixed Motives, 
    127 Yale L.J. 1106
     (2018).
    70 The Complaint in this case alleges the following remarks of some members of Congress.
    Rep. Waters, Chair of the Financial Services Committee, said, “I have the gavel—and subpoena
    power—and I am not afraid to use it.” Complaint ¶ 37. Another member of Congress “stated that
    the new House majority would be ‘brutal’ for President Trump” and that “[w]e’re going to have
    to build an air traffic control tower to keep track of all the subpoenas flying from here to the White
    House.” 
    Id.
     Others “were busy preparing a ‘subpoena cannon’ to fire at President Trump.” 
    Id.
    Others, “according to news outlets that interviewed party leaders,” issued statements that “meant
    that they were going to spend the next two years launching a ‘fusillade’ of subpoenas in order to
    ‘drown Trump with investigations,’ ‘turn Trump’s life upside down,’ and ‘make Trump’s life a
    living hell.’” Id. ¶ 36.
    76
    evidence that valid legislative purposes are being pursued and “the purpose[s]
    asserted [are] supported by references to specific problems which in the past have
    been or which in the future could be the subjects of appropriate legislation.”
    Shelton, 404 F.2d at 1297.
    Appellants object to the extensive time frame covered by the subpoenas,
    especially the absence of any time limitations on requests relating to account
    applications and the identity of those holding interests in accounts. Appellants
    also object to disclosure of financial records in the names of family members,
    including the Lead Plaintiff’s grandchildren. However, such information,
    including documents dating back to when accounts were opened, is reasonably
    related to an investigation about money laundering.
    Appellants contend that the subpoenas exceed any valid legislative purpose
    because, in their view, the subpoenas are intended to discover evidence of crimes,
    thereby indicating that the Committees are pursuing a law enforcement objective,
    which is beyond the power of Congress. See Quinn, 
    349 U.S. at 161
    . But, as
    Appellants themselves recognize, “a permissible legislative investigation does not
    become impermissible because it might reveal evidence of a crime.” Br. for
    Appellants at 22. Any investigation into the effectiveness of the relevant agencies’
    77
    existing efforts to combat money laundering or the need for new legislation to
    render such efforts more effective can be expected to discover evidence of crimes,
    and such discovery would not detract from the legitimacy of the legislative
    purpose in undertaking the investigation. The Supreme Court long ago rejected
    Appellants’ argument: “Nor do we think it a valid objection to the investigation
    that it might possibly disclose crime or wrongdoing on [an executive branch
    official’s] part.” McGrain, 273 U.S. at 179‒80. See Sinclair, 
    279 U.S. at 295
     (“[T]he
    authority of [Congress], directly or through its committees, to require pertinent
    disclosures in aid of its own constitutional power is not abridged because the
    information sought to be elicited may also be of use in [criminal prosecutions].”).
    Appellants fault Judge Ramos, who, they contend, “asserted that Congress
    has an independent ‘informing function’ that allows it to . . . ‘publicize corruption
    . . . in agencies of the Government,’ even absent a connection to ‘contemplated
    legislation in the form of a bill or statute.’” Br. for Appellants at 23 (quoting District
    Court opinion, J. App’x 127). Although the phrases quoted from the Court’s
    opinion are accurate, the brief’s addition of the words “independent” and “absent
    a connection” is a mischaracterization of what Judge Ramos said. He was not
    asserting an independent informing function or investigative power absent a
    78
    connection to a legislative purpose. He was careful to state that Congress’s
    legislative authority “includes a more general informing function.” J. App’x 127
    (emphasis added). This reflected the Supreme Court’s statement in Hutchinson v.
    Proxmire, 
    443 U.S. 111
    , 132‒33 (1979), that “congressional efforts to inform itself
    through committee hearings are part of the legislative function.”71
    However, some of the Court’s statements in Watkins create uncertainty as to
    whether, and in what circumstances, an informing function permits public
    disclosure of information obtained as part of a valid legislative inquiry. On the one
    hand, the Court said, “We have no doubt that there is no congressional power to
    expose for the sake of exposure.” 
    354 U.S. at 200
    . On the other hand, the Court also
    said, “The public is, of course, entitled to be informed concerning the workings of
    its government.”72 
    Id.
     And, in cautioning that the public’s right to be informed
    about its government “cannot be inflated into a general power to expose,” 
    id.,
     the
    Court added in the same sentence, “where the predominant result can only be an
    71  To whatever extent Judge Ramos might be understood as treating the informing
    function as an additional source of Congress’s power, he did not rely on that source of authority,
    mentioning it only as part of a general overview of Congress’s powers.
    72 In Hutchinson, the Supreme Court arguably contradicted this statement when it said,
    “[T]he transmittal of . . . information by individual Members in order to inform the public [about
    their activities in Congress] is not a part of the legislative function or the deliberations that make
    up the legislative process.” 
    443 U.S. at 133
    . However, the Court’s next sentence makes the limited
    context clear: “As a result, transmittal of such information by press releases and newsletters is
    not protected by the Speech or Debate Clause.” 
    Id.
    79
    invasion of the private rights of individuals,” 
    id.
     (emphases added). The Court also
    noted that it was “not concerned with the power of the Congress to inquire into
    and publicize corruption, maladministration or inefficiency in agencies of the
    Government.” 
    Id.
     at 200 n.33. These latter statements make clear that Congress can
    obtain information in an investigation as long as the information is collected in
    furtherance of valid legislative purposes. In the pending appeal, the high
    significance of the valid legislative purposes demonstrates that the “predominant
    purpose” of the Committees’ inquiries cannot be said to be “only” to invade
    private rights.
    Specific substantive objections to scope of subpoenas. We next consider
    Appellants’ specific challenges to the scope of the subpoenas. Of the three
    subpoenas, the two identical subpoenas to Deutsche Bank have the broadest scope.
    These subpoenas fill six single‐spaced pages describing eight categories of
    documents, subdivided into 52 paragraphs, many of which request several types
    of items. If such extensive document requests were made during discovery in
    ordinary civil litigation, an initial response would likely be that the requests are
    too burdensome. In this case, however, the Banks have made no claim that
    compiling the requested documents imposes an excessive burden on them. It is
    80
    Appellants whose privacy is claimed to be unlawfully impaired by the Banks’
    compliance with the subpoenas who challenge the breadth of the requests. To
    consider that challenge we examine the subpoenas in detail.
    We note that of the eight categories of documents sought by the two
    Deutsche Bank Subpoenas, only categories 1, 7, and 8 request documents
    belonging to, or likely to reveal information concerning, Appellants or entities they
    control or in which they are alleged to have interests. The Committees confirmed
    this fact during oral argument, without dispute from Appellants. The first
    category of documents includes, with respect to the individuals (including
    members of their immediate families) and entities named: documents reflecting
    applications to open accounts, due diligence, and related items, ¶ 1(i); account
    statements, ¶ 1(ii); transfers of amounts in excess of $10,000, ¶ 1(iii); summaries or
    analyses of account activity including the destination of checks (without limitation
    as to amount), ¶ 1(iv); suspicious activity, ¶ 1(v); investment, mortgage, and credit
    arrangements and related items, ¶ 1(vi), including appraisals of assets, ¶ 1(vi)(d),
    and financial information provided by borrowers, ¶ 1(vi)(e), such as tax returns, ¶
    1(vi)(e)(7), and bankruptcy records, ¶ 1(vi)(e)(8); information supplied pursuant
    to §§ 314(a) or 314(b) of the PATRIOT Act, Pub. L. No. 107‐56, ¶ 1(vii); records
    81
    generated by named bank employees, ¶ 1(viii); documents not kept in customary
    record‐keeping systems related to the named individuals and entities, ¶ 1(ix); and
    matters discussed with Deutsche Bank’s boards, ¶ 1(x).
    The seventh category covers documents reflecting periodic reviews of the
    identified individuals and entities. ¶ 7. The eighth category covers any
    communications by named employees of the Banks concerning the identified
    individuals and entities. ¶ 8. Many of the paragraphs in categories 1, 7, and 8 seek
    documents “including, but not limited to, those involving any foreign individual,
    entity, or government” or similar language. E.g., ¶ 1(vi), ¶ 1(vi)(k).
    The subpoena from the Financial Services Committee to Capital One is less
    extensive, filling one and one‐half single‐spaced pages describing one category of
    documents, subdivided into fifteen paragraphs, two of which request several
    items. This category includes, with respect to accounts held by the entities named
    and their principals, directors, etc.: documents related to applications to open
    accounts and due diligence, ¶ 1(i); documents identifying those with interests in
    the accounts, ¶ 1(ii); documents identifying any account manager, ¶ 1(iii); monthly
    statements and cancelled checks in excess of $5,000, ¶ 1(iv); summaries or analyses
    of account activity including the destination of checks (without limitation as to
    82
    amount), ¶ 1(v); transfers in excess of $10,000, ¶ 1(vi); documents concerning
    suspicious activity, ¶ 1(vii); reviews of accounts pursuant to Capital One’s
    procedures related to Bank Secrecy Act, anti‐money‐laundering, and compliance
    with guidance on “Politically Exposed Persons,” ¶ 1(viii); documents not kept in
    customary record‐keeping systems related to any loan provided to the named
    entities, ¶ 1(ix); documents related to real estate transactions, ¶ 1(x); documents
    provided in response to any subpoena or request from any U.S. Federal or state
    agency, ¶ 1(xi)(a); notices of administrative, civil, or criminal actions, ¶ 1(xi)(b);
    requests pursuant to §§ 314(a) or 314(b) of the PATRIOT Act, ¶ 1(xi)(c); and
    requests for information to or from a third party, ¶ 1(xi)(d).
    Sensitive personal information. A specific item in the subpoenas that raises
    serious concerns as to whether even valid legislative purposes permit exposure of
    matters entitled to privacy protection is the request for “analyses of . . . transfers,
    including . . . the destination of the transfers . . ., including any . . . check . . . .”
    Deutsche Bank Subpoenas, ¶ 1(iv); Capital One Subpoena, ¶ 1(v) (emphasis
    added). These items have no dollar limitations, even though other provisions limit
    transfer information to checks above specified amounts. Deutsche Bank
    Subpoenas, ¶ 1(iii) ($10,000); Capital One Subpoena, ¶ 1(iv) ($5,000). In addition
    83
    to “analyses” of all checks, the Deutsche Bank Subpoenas seek “monthly or other
    periodic account statements” including “outgoing funds transfers,” ¶ 1(ii), which
    might reveal the recipients of at least some checks.
    These provisions create a risk that some of the checks sought might reveal
    sensitive personal details having no relationship to the Committees’ legislative
    purposes. For example, if one of the entities decided to pay for medical services
    rendered to an employee, the check, and any similar document disclosing sensitive
    personal information unrelated to business transactions, should not be disclosed.
    The same would be true of any check reflecting payment for anyone’s medical
    services. The Committees have advanced no reason why the legislative purposes
    they are pursuing require disclosure of such sensitive personal information.
    Indeed, counsel for the Committees at oral argument appeared to recognize that
    such sensitive personal information need not be disclosed. Oral Arg. Tr. at p. 41,
    ll. 8‒18. We have not located any decision that has considered whether Congress
    is entitled to require disclosure of sensitive personal information that might be
    swept up in a collection of business‐related financial documents legitimately
    sought in aid of legislative purposes. At least in the absence of a compelling reason
    for such disclosure, we decline to permit it in this case.
    84
    Other possibly excludable documents. In addition to what we have described as
    “sensitive documents,” we recognize that there might be a few documents within
    the coverage of the subpoenas that have such an attenuated relationship to the
    Committees’ legislative purposes that they need not be disclosed.
    We have concluded that the coverage of the following paragraphs of the
    Deutsche Bank Subpoenas might include some documents warranting exclusion:
    paragraphs 1(ii), 1(iv), 1(vi)(e), 1(viii), and 8. We reach the same conclusion as to
    the following paragraphs of the Capital One subpoena: paragraphs 1(iv), 1(v), 1(x),
    and 1(xi)(d). We have no such concerns with the coverage of any of the other
    paragraphs of the subpoenas. All the documents within the coverage of these other
    paragraphs are sufficiently likely to be relevant to legislative purposes.73 Even if
    within the coverage of these other paragraphs are some documents that turn out
    not to advance the Committees’ investigations, that would not be a valid reason
    for excluding such documents from production. As the Supreme Court has
    observed with reference to another challenge to a congressional subpoena seeking
    73
    For example, paragraph 1(v) of the Deutsche Bank subpoenas calls for production of
    “any document related to monitoring for . . . possible suspicious activity,” and paragraph 1(vii)
    calls for production of “any document related to any request for information issued or received
    by Deutsche Bank AG pursuant to Sections 314(a) or 314(b) of the USA PATRIOT Act,” provisions
    that concern money laundering.
    85
    private banking records, “The very nature of the investigative function––like any
    research––is that it takes the searchers up some ‘blind alleys’ and into
    nonproductive enterprises. To be a valid legislative inquiry there need be no
    predictable end result.” Eastland, 
    421 U.S. at 509
    .
    Any attempt to identify for exclusion from disclosure documents within the
    listed paragraphs must be done with awareness that a principal legislative
    purpose of the Committees is to seek information about the adequacy of banking
    regulators’ steps to prevent money laundering, a practice that typically disguises
    illegal transactions to appear lawful. Many documents facially appearing to reflect
    normal business dealings will therefore warrant disclosure for examination and
    analysis by skilled investigators assisting the Committees to determine the
    effectiveness of current regulation and the possible need for improved legislation.
    Procedure for exclusion of specific documents. To facilitate exclusion of sensitive
    documents and those few documents that should be excluded from the coverage
    of the listed paragraphs, we instruct the District Court on remand to implement
    the following procedure:74 (1) after each of the Banks has promptly, and in no event
    beyond 30 days, assembled all documents within the coverage of paragraphs 1(ii),
    See 
    28 U.S.C. § 2106
     (appellate court “may remand the cause and . . . require such further
    74
    proceedings to be had as may be just under the circumstances.”).
    86
    1(iv), 1(vi)(e), 1(viii), and 8 of the Deutsche Bank Subpoenas and paragraphs 1(iv),
    1(v), 1(x), and 1(xi)(d) of the Capital One Subpoena, counsel for Appellants shall
    have 14 days to identify to the District Court all sensitive documents and any
    documents (or portions of documents) within the coverage of the listed
    paragraphs that they contend should be withheld from disclosure, under the
    limited standard discussed above; (2) counsel for the Committees shall have seven
    days to object to the nondisclosure of such documents; (3) the District Court shall
    rule promptly on the Committees’ objections; (4) Appellants and the Committees
    shall have seven days to seek review in this Court of the District Court’s ruling
    with respect to disclosure or nondisclosure of documents pursuant to this
    procedure.75 Any appeal of such a ruling will be referred to this panel.
    The abbreviated timetable of this procedure is set in recognition of the
    Supreme Court’s instruction that motions to enjoin a congressional subpoena
    should “be given the most expeditious treatment by district courts because one
    branch of Government is being asked to halt the functions of a coordinate branch.”
    Eastland, 
    421 U.S. at
    511 n.17.
    75Review may be initiated by a letter to the Clerk of this Court, referencing the existing
    docket number, without the need to file a notice of appeal.
    87
    All other documents. All documents within the coverage of the paragraphs
    not listed and those documents not excluded pursuant to the procedure outlined
    above shall be promptly transmitted to the Committees in daily batches as they
    are assembled, beginning seven days from the date of this opinion.
    Except as provided above, all three subpoenas seek documents that the
    Committees are entitled to believe will disclose information pertinent to legitimate
    topics within the Committees’ authorized investigative authority, especially
    money laundering, inappropriate foreign financial relationships with the named
    individuals and entities, and Russian operations to influence the U.S. political
    process. As the Supreme Court has observed, documents subpoenaed by a
    congressional committee need only be “not plainly incompetent or irrelevant to
    any lawful purpose [of a committee] in the discharge of its duties.” McPhaul v.
    United States, 
    364 U.S. 372
    , 381 (1960) (quotation marks and brackets omitted). The
    documents sought by the three subpoenas easily pass that test. The subpoenas are
    reasonably framed to aid the Committees in fulfilling their responsibilities to
    conduct oversight as to the effectiveness of agencies administering statutes within
    the Committees’ jurisdiction and to obtain information appropriate for
    consideration of the need for new legislation.
    88
    Objections of the United States as amicus curiae. The United States makes
    several additional arguments in its amicus curiae brief. The amicus brief contends
    that “the possibility that a subpoena might transgress separation‐of‐powers
    limits . . . mandates that the House clearly authorize a subpoena directed at [the
    President’s] records.” Br. for Amicus United States at 10 (citing Franklin v.
    Massachusetts, 
    505 U.S. 788
    , 800‒01 (1992), and Armstrong v. Bush, 
    924 F.2d 282
    , 289
    (D.C. Cir. 1991)). First, this case does not concern separation of powers. The Lead
    Plaintiff is not suing in his official capacity, no action is sought against him in his
    official capacity, no official documents of the Executive Branch are at issue,
    Congress has not arrogated to itself any authority of the Executive Branch, and
    Congress has not sought to limit any authority of the Executive Branch.
    Second, the cited cases, Franklin and Armstrong, do not concern
    congressional requests for information. Both require a clear statement from
    Congress when a statute is claimed to limit presidential power. In all of the
    numerous decisions concerning congressional subpoenas for information from
    Executive Branch officials, including the President, there is not even a hint, much
    less a ruling, that the House (or Senate) is required to authorize a specific subpoena
    issued by one of its committees. In any event, the materials cited above provide
    89
    sufficient clarity, in light of Supreme Court decisions concerning congressional
    investigations, to authorize subpoenas for the Lead Plaintiff’s unofficial business
    records in aid of valid legislative purposes.
    The amicus brief argues that a President is “entitled to special solicitude in
    discovery,” Br. for Amicus United States at 6 (citing Cheney, 
    542 U.S. at 385
    , and In
    re Trump, 
    928 F.3d 360
    , 371‒72 (4th Cir. 2019)), “even in suits solely related to his
    private conduct,” 
    id.
     (citing Jones, 
    520 U.S. at 707
    ). As a general proposition, we
    agree and have endeavored to recognize that point in the special procedure we
    have directed the District Court to follow on a limited remand. We note, however,
    that in Cheney the Supreme Court was careful to point out that “special
    considerations control when the Executive Branch’s interests in maintaining the
    autonomy of its office and safeguarding the confidentiality of its communications
    are implicated.” Cheney, 
    542 U.S. at 385
    . In the pending appeal, the Lead Plaintiff
    is suing in his individual capacity, no confidentiality of any official documents is
    asserted, and any concern arising from the risk of distraction in the performance
    of the Lead Plaintiff’s official duties is minimal in light of the Supreme Court’s
    decision in Clinton v. Jones, and, in any event, far less substantial than the
    importance of achieving the legislative purposes identified by Congress. In Jones,
    90
    the claimed distraction was that attending a deposition and being subjected to a
    civil trial would divert some of the President’s time from performance of his
    official duties; in the pending case, there is no claim of any diversion of any time
    from official duties. Jones, although expressing concern with “the high respect that
    is owed to the office of the Chief Executive,” not only permitted discovery directed
    to the President but also obliged him to be subjected to a civil trial. 
    520 U.S. at 707
    .76
    In re Trump, 928 F.3d at 379‒80, concerned a petition for mandamus directing a
    District Court to dismiss for lack of standing a complaint alleging violation of the
    Foreign and Domestic Emoluments Clauses, U.S. Const. art I, § 9, cl. 8, art II, § 1,
    cl. 7.
    76Judge Livingston seeks to minimize the significance of Clinton v. Jones on several
    grounds. First, she attempts to refute our point that this case does not involve separation‐of‐
    powers concerns, Part. Diss. Op. at 15‒16, but in doing so, she accords little significance to the
    major reason for that point: the Lead Plaintiff is suing in his individual, not his official, capacity.
    She then seeks to relegate Jones to near insignificance by referring to “longstanding interbranch
    practice,” id. at 17, again ignoring the fact that this litigation is not a conflict between branches of
    the Government. The fact that the United States filed only an amicus curiae brief, rather than
    intervene to assert the interests of the United States or those of the office of the President,
    underscores the absence of a true interbranch conflict. The point that compliance with the
    subpoenas will not have an impact on the Lead Plaintiff’s time sufficient to bar compliance arises
    from a comparison with Clinton v. Jones, in which the Supreme Court required a President to be
    available for a deposition and be subject to a civil trial. The so‐called distraction of the Lead
    Plaintiff is of far less significance than what the Supreme Court permitted with respect to
    President Clinton. In sum, Judge Livingston offers no reason to think that compliance with the
    subpoenas will distract the Lead Plaintiff from the performance of official duties to a greater
    extent than the Supreme Court permitted in Clinton v. Jones.
    91
    The amicus brief not only repeats Appellants’ argument that the House
    must identify a legitimate legislative purpose for seeking the President’s
    information, but adds that it must do so “with sufficient particularity that courts
    can concretely review the validity of any potential legislation and determine
    whether the information requested is pertinent and necessary to Congress’s
    consideration of such legislation.” Br. for Amicus United States at 11. The meaning
    of this sentence is not clear. If it means that legislative purpose must be sufficiently
    identified to enable a court now to consider the validity of any legislation that
    might be enacted in the future, it would encounter the prohibition on advisory
    opinions. See Flast v. Cohen, 
    392 U.S. 83
    , 96 (1968) (“[T]he rule against advisory
    opinions implements the separation of powers prescribed by the Constitution and
    confines federal courts to the role assigned them by Article III.”). On the other
    hand, if the sentence means that legislative purpose must be sufficiently identified
    so that it will serve as an aid in interpreting legislation that might be enacted in
    the future, there is no requirement that legislative purpose sufficient to support a
    congressional subpoena must also suffice to aid a court in interpreting some
    statute yet to be enacted. In any event, the legislative purposes of the Committees’
    subpoenas have been sufficiently identified.
    92
    Refining Appellants’ argument that the Committees’ valid legislative
    purposes have not been adequately identified, the amicus brief argues that “courts
    must assess ‘the connective reasoning whereby the precise questions asked relate
    to’ the legitimate legislative purpose.” Br. for Amicus United States at 14 (quoting
    Watkins, 
    354 U.S. at 215
    ). This quotation from Watkins is difficult to square with
    the Supreme Court’s later statement in McPhaul that subpoenaed documents need
    only be “not plainly incompetent or irrelevant to any lawful purpose [of a
    committee] in the discharge of its duties.” McPhaul, 
    364 U.S. at 381
     (quotation
    marks and brackets omitted). It would appear that the “connective reasoning”
    phrase of Watkins, if still valid at all, is limited to the context in which it was said‒
    a committee witness’s objection to a specific question‒and not to a subpoena for
    adequately described categories of documents that are relevant to adequately
    identified valid legislative purposes of investigation.
    The amicus brief argues that subpoenaed information “not ‘demonstrably
    critical’ should be deemed insufficiently pertinent when directed at the President’s
    records.” Br. for Amicus United States at 15 (quoting Senate Select Committee on
    Presidential Campaign Activities v. Nixon, 
    498 F.2d 725
    , 731 (D.C. Cir. 1974) (in
    banc)). The D.C. Circuit used the phrase “demonstrably critical” as a standard for
    93
    overcoming a claim of executive privilege. See Nixon, 
    498 F.2d at 727
    . President
    Nixon had asserted that tape recordings of his conversations with senior staff
    “cannot be made public consistent with the confidentiality essential to the
    functioning of the Office of the President.” 
    Id.
     (internal quotation marks omitted).
    In the pending appeal, no claim of executive privilege has been made, much less a
    claim that withholding the subpoenaed documents is “essential to the functioning
    of the Office of the President.” 
    Id.
    The amicus brief asserts that “[c]ourts may require the Committees first ‘to
    narrow the scope of the subpoenas’ to first seek critical information in light of the
    President’s constitutional interests,” Br. for Amicus United States at 17 (ellipsis
    omitted) (quoting Cheney, 
    542 U.S. at 390
    ), and that “[c]ourts may require Congress
    first to determine whether records relevant to a legitimate legislative purpose are
    not, in fact, available from other sources that would not impinge on constitutional
    interests,” 
    id.
     (citing Watkins, 
    354 U.S. at 206
    ). That argument has no application to
    the many documents that were generated by the Banks. Moreover, the District
    Court was not required to do what it “may” do,77 and the President’s
    77  The amicus brief asserts that the District Court “assumed that it had no authority to deal
    with the overbroad character of the congressional subpoenas here.” Br. for Amicus United States
    at 25 (citing J. App’x 138). We see no indication that the District Court made such an assumption,
    either at the cited reference to the District Court’s opinion or elsewhere in that opinion.
    94
    “constitutional interests” are implicated when official documents are sought, as in
    Cheney, precipitating “a conflict between the [L]egislative and [E]xecutive
    [B]ranches,” AT&T I, 
    551 F.2d at 390
    .
    The amicus brief contends that H.R. 507 is insufficient authorization for the
    subpoenas to the extent that it authorizes not only current subpoenas to the named
    persons and entities but also future subpoenas to them. Br. for Amicus United
    States at 18. Because the pending appeal concerns denial of a preliminary
    injunction to prevent compliance with issued subpoenas, we make no
    determination with respect to future subpoenas.
    In an overarching argument endeavoring to strengthen and make decisive
    many of the arguments just considered, the amicus brief urges the principle of
    constitutional avoidance. Confronting a constitutional challenge to a statute of
    uncertain meaning, courts sometimes interpret the statute so that it clearly
    comports with the Constitution. See, e.g., Crowell v. Benson, 
    285 U.S. 22
    , 62 (1932).
    Enlisting the principle of constitutional avoidance in the pending appeal, the
    amicus brief contends that the principle should persuade this Court to require the
    Committees to “‘explore other avenues’” for obtaining the information, Br. for
    Amicus United States at 3 (quoting Cheney, 
    542 U.S. at 390
    ); to require the District
    95
    Court “to proceed in a more tailored manner,” id. at 5; to approach “with the
    utmost caution” the task of “balanc[ing] Congress’s interest in the information
    against any constitutional interests of the party withholding it,” id. at 16; and to
    require the District Court “to attempt to avoid a conflict between constitutional
    interests before it can ‘intervene responsibly,’” id. at 17‒18 (quoting AT&T II, 
    567 F.2d at 131
    ). The amicus brief also reminds us of the Supreme Court’s statement in
    Rumely suggesting “abstention from adjudication unless no choice is left.” 
    345 U.S. at 46
    .
    In the circumstances of this case, we do not believe that constitutional
    avoidance adds persuasive force to the arguments in the amicus brief. First, we
    question whether constitutional avoidance applies beyond the context of
    interpreting ambiguous statutes that are challenged as unconstitutional. The
    Supreme Court considered that question in an analogous situation in FCC v. Fox
    Television Stations, Inc., 
    556 U.S. 502
     (2009). Broadcasters urged the Court to apply
    to the FCC a more stringent arbitrary‐and‐capricious standard of review of agency
    actions that implicate constitutional liberties. See 
    id. at 516
    . In declining to do so,
    the Court said, “We know of no precedent for applying [the principle of
    constitutional avoidance] to limit the scope of authorized executive action.” 
    Id.
     at
    96
    516. Similarly, it is at least doubtful whether the principle should be enlisted to
    limit the scope of authorized congressional action.
    Second, to the extent that decisions like Cheney and Rumely advised courts
    to proceed with caution, they did so in contexts quite different from the pending
    appeal. Cheney involved a real confrontation between the Legislative and
    Executive Branches; Rumely involved a “limitation imposed by the First
    Amendment,” 
    345 U.S. at 44
    . By contrast, the pending appeal involves solely
    private financial documents, and the Lead Plaintiff sues only in his individual
    capacity. The only defense even implicating the office of the presidency is the
    possibility that document disclosure might distract the Lead Plaintiff in the
    performance of his official duties, a risk we have concluded, in light of Supreme
    Court precedent, Clinton v. Jones, is minimal at best. Appellants make no claim that
    Congress or its committees are purporting to curb in any way the powers of the
    Executive Branch.
    For all of these reasons, we see no reason to permit constitutional avoidance
    to provide added strength to the arguments of the amicus or Appellants
    themselves.
    97
    Having considered Appellants’ statutory and constitutional claims, we
    conclude that they have not shown a likelihood of success on any of them. In
    reaching this conclusion, we recognize that we are essentially ruling on the
    ultimate merits of Appellants’ claims. But, as the Supreme Court has pointed out,
    “Adjudication of the merits is most appropriate if the injunction rests on a question
    of law and it is plain that the plaintiff cannot prevail.” MuFnaf v. Geren, 
    553 U.S. 674
    , 691 (2008). That is the situation here.
    III. Sufficiently Serious Questions to Make Them a Fair Ground for Litigation
    In considering the less rigorous serious‐questions standard for a
    preliminary injunction, it is important to recognize that the first component of this
    standard, in addition to a balance of hardships tipping decidedly in favor of the
    moving party, is “sufficiently serious questions going to the merits to make them a
    fair ground for litigation.” Kelly, 933 F.3d at 184 (emphasis added); Jackson Dairy, 
    596 F.2d at 72
    . The meaning of this emphasized phrase rarely receives explicit
    consideration. Two interpretations are possible.
    The phrase could mean that the questions raised have sufficiently serious
    legal merit to be open to reasonable debate. That view of the phrase would be
    especially appropriate in those cases where the need for preliminary relief
    98
    precipitously arose just prior to some impending event and the party seeking
    temporary relief has not had an adequate opportunity to fully develop its legal
    arguments. Alternatively, or in addition, the phrase could mean that the questions
    raised have sufficiently serious factual merit to warrant further investigation in
    discovery and, if summary judgment is not warranted, at trial.
    In the pending appeal, the District Court stated, “The word ‘serious’ relates
    to a question that is both serious and open to reasonable debate.” J. App’x 150. But
    Judge Ramos declined to accept Appellants’ claim that just raising a constitutional
    objection to the subpoenas sufficed to render the claim serious. As he observed, if
    that sufficed, “every complaint challenging the power of one of the three
    coordinate branches of government would result in preliminary relief, regardless
    of whether established law renders the complaint unmeritorious.” 
    Id.
    Our case law indicates that the phrase “make them fair ground for
    litigation” often refers to those factual disputes that can be resolved at trial only
    after investigation of the facts. We have stated that the questions raised by a
    plaintiff’s claims must be “so serious, substantial, difficult and doubtful as to make
    them a fair ground for litigation and thus for more deliberate investigation.” Hamilton
    Watch Co. v. Benrus Watch Co., 
    206 F.2d 738
    , 740 (2d Cir. 1953) (emphasis added).
    99
    The emphasized words appear to have originated in Hamilton Watch, but have
    been frequently repeated by this Court. See Gulf & Western Industries, Inc. v. Great
    Atlantic & Pacific Tea Co., 
    476 F.2d 687
    , 692, 93 (2d Cir. 1973); Checker Motors Corp.
    v. Chrysler Corp., 
    405 F.2d 319
    , 323 (2d Cir. 1969); Unicon Management Corp. v.
    Koppers Co., 
    366 F.2d 199
    , 205 (2d Cir. 1966). More recently, we pointed out in
    Citigroup Global Markets that a virtue of the serious‐questions standard is “that it
    permits the entry of an injunction in cases where a factual dispute renders a fully
    reliable assessment of the merits impossible.” 
    598 F.3d at 36
     (emphasis added). For
    example, in Jacobson & Co. v. Armstrong Cork Co., 
    548 F.2d 438
     (2d Cir. 1977), we
    affirmed a preliminary injunction under the serious‐questions standard because
    the plaintiff had presented affidavits, depositions, and exhibits sufficient to contest
    the factual issue of the reason for an employee’s termination, see 
    id. at 444
    .
    We need not choose between these meanings of “fair ground for litigation.”
    Appellants are not entitled to a preliminary injunction under the serious‐questions
    standard because (1) that standard, as we have discussed, see Part I, does not apply
    to preliminary injunctive relief sought to prevent governmental action, and (2)
    even if applicable, the standard requires a balance of hardships that tips decidedly
    to the plaintiff, a requirement not met in this case, see Point IV. We also point out
    100
    that, to the extent that the serious‐questions standard furnishes an opportunity to
    develop legal arguments concerning a reasonably debatable question, Appellants
    have fully developed their positions in the 95 pages of briefs they have submitted.
    To the extent that the serious‐questions standard is available for factual
    development of an issue, Appellants have not identified a single factual issue that
    might warrant a trial or a single witness or document that might add substance to
    their claims at a trial.
    Furthermore, both their statutory and constitutional claims, though serious
    in at least some sense, lack merit, and, because they both involve solely issues of
    law, are properly rejected at this stage of the litigation, see Munaf, 
    553 U.S. at
    691‒
    92, except for the limited remand we have ordered.
    IV. Balance of Hardships/Equities
    The hardship for Appellants if a preliminary injunction is denied would
    result from the loss of privacy for their financial documents. We have recognized
    that this loss of privacy is irreparable. In assessing the seriousness of that loss for
    purposes of determining the balance of hardships, we note that the loss will be
    somewhat mitigated to the extent that sensitive personal information and some
    documents will not be disclosed pursuant to the procedure we have ordered upon
    101
    remand. The seriousness of the hardship arising from disclosure of the
    information called for by the subpoenas should be assessed in light of the fact that
    the Lead Plaintiff is already required to expose for public scrutiny a considerable
    amount of personal financial information pursuant to the financial disclosure
    requirement of the Ethics in Government Act, 5 U.S.C. app. §§ 101‒111, although
    considerably more financial information is required to be disclosed by the
    subpoenas.
    The hardship for the Committees if a preliminary injunction is granted
    would result from the loss of time to consider and act upon the material disclosed
    pursuant to their subpoenas, which will expire at the end of the 116th Congress.
    This loss is also irreparable. In assessing the seriousness of that loss for purposes
    of determining the balance of hardships, we note that the Committees have
    already been delayed in the receipt of the subpoenaed material since April 11
    when the subpoenas were issued. They need the remaining time to analyze the
    material, hold hearings, and draft bills for possible enactment.
    Even if the balance of these hardships/equities tips in favor of Appellants,
    which is debatable, it does not do so “decidedly,” Kelly, 933 F.3d at 184; Jackson
    Dairy, 956 F.2d at 72, as our serious‐questions standard requires.
    102
    V. Public Interest
    The public interest in vindicating the Committees’ constitutional authority
    is clear and substantial. It is the interest of two congressional committees,
    functioning under the authority of a resolution of the House of Representatives
    authorizing the subpoenas at issue, to obtain information on enforcement of anti‐
    money‐laundering/counter‐financing of terrorism laws, terrorist financing, the
    movement of illicit funds through the global financial system including the real
    estate market, the scope of the Russian government’s operations to influence the
    U.S. political process, and whether the Lead Plaintiff was vulnerable to foreign
    exploitation. The opposing interests of Appellants, suing only in their private
    capacity, are primarily their private interests in nondisclosure of financial
    documents concerning their businesses, rather than intimate details of someone’s
    personal life or information the disclosure of which might, as in Watkins, 
    354 U.S. at
    197‒99, chill someone’s freedom of expression.
    We recognize, however, that the privacy interests supporting nondisclosure
    of documents reflecting financial transactions of the Lead Plaintiff should be
    accorded more significance than those of an ordinary citizen because the Lead
    Plaintiff is the President. Although the documents are not official records of the
    103
    Executive Branch, the Lead Plaintiff is not suing in his official capacity, and no
    executive privilege has been asserted, disclosure of the subpoenaed documents
    can be expected to risk at least some distraction of the Nation’s Chief Executive in
    the performance of his official duties. See Nixon v. Fitzgerald, 
    457 U.S. 731
    , 753
    (1982) (noting risk of distraction as one reason for establishing immunity of
    President from civil liability for official actions). That concern, we note, did not
    dissuade the Supreme Court from requiring President Nixon to comply with a
    district court’s subpoena to produce tape recordings of conversations with senior
    staff, see United States v. Nixon, 
    418 U.S. 683
     (1974), or requiring President Clinton
    to submit to discovery, including a deposition, in civil litigation involving pre‐
    presidential conduct, see Jones, 
    520 U.S. at
    697‒706.78 See also Trump v. Vance, 
    941 F.3d 631
    , 641 n. 12 (2d Cir. 2019) (concluding that “the disclosure of personal
    financial information, standing alone, is unlikely to impair the President in
    78  In Jones, the Supreme Court stated, “The fact that a federal court’s exercise of its
    traditional Article III jurisdiction may significantly burden the time and attention of the Chief
    Executive is not sufficient to establish a violation of the Constitution.” 
    520 U.S. at 703
    . The same
    can be said as to Congress’s exercise of its traditional Article I jurisdiction. One court has
    discounted concern that compliance with document requests might distract the President in the
    performance of official duties by noting that “the President himself appears to have had little
    reluctance to pursue personal litigation despite the supposed distractions it imposes upon his
    office.” District of Columbia v. Trump, 
    344 F. Supp. 3d 828
    , 843 (D. Md. 2018) (collecting examples),
    rev’d on other grounds (lack of standing), In re Trump, 
    928 F.3d 360
     (4th Cir. 2019).
    104
    performing the duties of his office”), petition for cert. filed, No. 19‐635 (U.S. Nov. 14,
    2019).
    The Committees’ interests in pursuing their constitutional legislative
    function is a far more significant public interest than whatever public interest
    inheres in avoiding the risk of a Chief Executive’s distraction arising from
    disclosure of documents reflecting his private financial transactions.
    Conclusion
    For all of these reasons, we conclude that under the applicable likelihood‐
    of‐success standard, Appellants’ motion for a preliminary injunction was properly
    denied, except as to disclosure of any documents that might be determined to be
    appropriate for withholding from disclosure pursuant to our limited remand. The
    serious‐questions standard is inapplicable, the balance of hardships does not tip
    decidedly in favor of Appellants, and the public interest favors denial of a
    preliminary injunction.
    We affirm the District Court’s order in substantial part to the extent that it
    denied a preliminary injunction and order prompt compliance with the
    subpoenas, except that the case is remanded to a limited extent for implementation
    of the procedure set forth in this opinion concerning the nondisclosure of sensitive
    105
    personal information and a limited opportunity for Appellants to object to
    disclosure of other specific documents within the coverage of those paragraphs of
    the subpoenas listed in this opinion. The mandate shall issue forthwith, but
    compliance with the three subpoenas and the procedure to be implemented on
    remand is stayed for seven days to afford Appellants an opportunity to apply to
    the Supreme Court or a Justice thereof for an extension of the stay.
    106
    DEBRA ANN LIVINGSTON, Circuit Judge, concurring in part and dissenting in part:
    Although not expressly provided for in the Constitution, Congress’s power
    to conduct investigations for the purpose of legislating is substantial, “as
    penetrating and far‐reaching as the potential power to enact and appropriate
    under the Constitution.” Eastland v. U.S. Servicemen’s Fund, 
    421 U.S. 491
    , 504 n.15
    (1975) (quoting Barenblatt v. United States, 
    360 U.S. 109
    , 111 (1959)). Yet this power
    is not unlimited. When Congress conducts investigations in aid of legislation, its
    authority derives from its responsibility to legislate—to consider the enactment of
    new laws or the improvement of existing ones for the public good.1 Congress has
    no power to expose personal information for the sake of exposure, see Watkins v.
    United States, 
    354 U.S. 178
    , 200 (1957) (expressing “no doubt that there is no
    congressional power to expose for the sake of exposure” (emphasis added)), nor
    1  None of these subpoenas issued in connection with an impeachment proceeding,
    in which Congress’s investigatory powers are at their peak, but rather, as stated, “in aid
    of legislation.” See Kilbourn v. Thompson, 
    103 U.S. 168
    , 190 (1880) (noting that “[w]here
    the question of . . . impeachment is before [the House or the Senate] acting in its
    appropriate sphere on that subject, we see no reason to doubt the right to compel the
    attendance of witnesses, and their answer to proper questions, in the same manner and
    by the use of the same means that courts of justice can in like cases”); Senate Select Comm.
    on Presidential Campaign Activities v. Nixon, 
    498 F.2d 725
    , 732 (D.C. Cir. 1974) (citing to
    Article I, Section 2 of the Constitution when noting that impeachment investigations in
    the House have “an express constitutional source” which differentiates them from
    Congress’s general oversight or legislative power).
    1
    may it seek information to enforce laws or punish for their infraction—
    responsibilities which belong to the executive and judicial branches respectively,
    and not to it. Id. at 187 (noting that Congress is neither “a law enforcement [n]or
    trial agency,” as “[t]hese are functions of the executive and judicial departments
    of government”). As the Supreme Court has put it: “No inquiry is an end in
    itself; it must be related to, and in furtherance of, a legitimate task of the Congress.
    Investigations conducted solely for the personal aggrandizement of the
    investigators or to ‘punish’ those investigated are indefensible.” Id.
    The legislative subpoenas here are deeply troubling.              Targeted at the
    President of the United States but issued to third parties, they seek voluminous
    financial information not only about the President personally, but his wife, his
    children, his grandchildren, his business organizations, and his business
    associates. 2   Collectively, the subpoenas seek personal and business banking
    records stretching back nearly a decade (and with regard to several categories of
    2 The Plaintiff entities here are defined to include not only parents, subsidiaries,
    related joint ventures and the like, but any “current or former employee, officer, director,
    shareholder, partner, member, consultant, senior manager, manager, senior associate,
    staff employee, independent contractor, agent, attorney or other representative of any of
    those entities,” so that the banking records of numerous individuals beyond the
    President’s immediate family are potentially included in this dragnet. J.A. at 47, 58.
    2
    information, with no time limitation whatsoever) and they make no distinction
    between business and personal affairs, nor consistently between large and small
    receipts and expenditures. To be sure, breadth may be necessary in legislative
    subpoenas so that Congress can learn about a proposed subject of legislation
    sufficiently to enact new laws or improve the old ones:         such learning is “an
    indispensable ingredient of lawmaking.” 3       Eastland, 
    421 U.S. at 505
    .   Still, the
    district court was of the view that in a routine civil case, it would have sent the
    parties into a room with the instruction that “you don’t come out until you come
    back with a reasonable subpoena.” J.A. at 94. The majority doesn’t disagree.
    It, too, characterizes the subpoenas as “surely broad in scope.” Maj. Op. at 45.
    It acknowledges that compliance will “subject [the President’s] private business
    affairs to the Committees’ scrutiny,” id. at 48, and impose irreparable harm, id. at
    13. It could have added that personal banking records of the President and his
    family are not excluded, and that neither House committee seeking this
    3  That said, “legislative judgments normally depend more on the predicted
    consequences of proposed legislative actions and their political acceptability, than on
    precise reconstruction of past events,” which appears to be the focus of the present
    subpoenas. Nixon, 
    498 F.2d at 732
    .
    3
    information will commit to treating any portion of it as confidential, irrespective
    of any public interest in disclosure. J.A. at 122–23.
    The majority and I are in agreement on several points. First, we agree that
    the Right to Financial Privacy Act (“RFPA”), 
    12 U.S.C. §§ 3401
    –3423, does not
    apply to Congress because, as the majority correctly concludes, Congress is not a
    “Government authority” within the meaning of that statute. Maj. Op. at 24–33.
    We likewise agree that 
    26 U.S.C. § 6103
     of the Internal Revenue Code does not pose
    an obstacle to Deutsche Bank AG’s disclosure of tax returns in its possession in
    response to the Committees’ subpoenas.       
    Id.
     at 34–44.   Accordingly, I concur
    that, as to the statutory arguments presented by the Plaintiffs, they have raised no
    serious question suggesting that the House subpoenas may not be enforced.
    The statutory arguments, however, are not the only arguments presented.
    The majority and I agree that this appeal raises an important issue regarding the
    investigative authority of two committees of the United States House of
    Representatives—the House Committee on Financial Services and the House
    Permanent Select Committee on Intelligence (collectively, “Committees”)—in the
    context of their efforts to obtain voluminous personal and business banking
    records of the President of the United States, members of his immediate family,
    4
    his primary business organization and affiliated entities, and his business
    associates.   Maj. Op. at 4.   In fact, the question before us appears not only
    important (as the majority acknowledges) but of first impression: the parties are
    unaware of any Congress before this one in which a standing or permanent select
    committee of the House has issued a third‐party subpoena for documents
    targeting a President’s personal information solely on the rationale that this
    information is “in aid of legislation.” Trump Br. at 14; Tr. of Oral Arg. at 34:24–
    35:3–4. But this House has now authorized all such House committees to issue
    legislative subpoenas of this sort, so long as directed at information involving this
    President, his immediate family, business entities, or organizations.      H.R. Res.
    507, 116th Cong. (2019); see also H.R. Res. 509, 116th Cong. § 3 (2019) (“House
    Resolution 507 is hereby adopted.”).
    In such a context, “experience admonishes us to tread warily.”          United
    States v. Rumely, 
    345 U.S. 41
    , 46 (1953). I agree with the majority that our review
    of the denial of a preliminary injunction is “appropriately more exacting where
    the action sought to be enjoined concerns the President . . . in view of ‘[t]he high
    respect that is owed to the office of the Chief Executive,’” Maj. Op. at 11 (quoting
    Cheney v. U.S. Dist. Court, 
    542 U.S. 367
    , 385 (2004)). We disagree, however, as to
    5
    the preliminary injunction standard to be applied.        In my view, a preliminary
    injunction may issue in a case of this sort when a movant has demonstrated
    sufficiently serious questions going to the merits to make them a fair ground for
    litigation, plus a balance of hardships tipping decidedly in that party’s favor, that
    the public interest favors an injunction, and that the movant, as here, will
    otherwise suffer irreparable harm. See Citigroup Glob. Markets, Inc. v. VCG Special
    Opportunities Master Fund Ltd., 
    598 F.3d 30
    , 35, 38 (2d Cir. 2010).
    And as to the merits showing, I respectfully disagree with the majority’s
    determination that the Plaintiffs’ constitutional arguments and those raised by the
    United States as amicus curiae are insubstantial—not sufficiently serious for closer
    review.4   Maj. Op. at 89–98. I cannot accept the majority’s conclusions that “this
    case does not concern separation of powers,” 
    id. at 89
    , and that there is “minimal
    at best” risk of distraction to this and future Presidents from legislative subpoenas
    of this sort, 
    id. at 97
    . Instead, I conclude that the Plaintiffs have raised serious
    4   Given my determination herein that the Plaintiffs have made a showing of
    “serious questions” as to the merits and that this case must be remanded, I need not now
    address whether the Plaintiffs have also satisfied the “likelihood of success” standard—
    and I do not do so, given the obligation in this context to avoid unnecessary judicial
    determinations on constitutional questions implicating Congress’s investigative powers.
    See Rumely, 
    345 U.S. at 46
    . I note, however, that I do not concur in the majority’s
    determination that as to the present reach of these subpoenas, the Plaintiffs have shown
    no likelihood of success.
    6
    questions on the merits, implicating not only Congress’s lawmaking powers, but
    also the ability of this and future Presidents to discharge the duties of the Office of
    the President free of myriad inquiries instigated “more casually and less
    responsibly” than contemplated in our constitutional framework.           Rumely, 
    345 U.S. at 46
    .
    Nor do I agree with the majority’s determination substantially to affirm the
    judgment and order compliance with these subpoenas.               The majority itself
    recognizes that these broad subpoenas cannot be enforced precisely as drafted
    because they call for the production of material that may either bear “an
    attenuated relationship” to any legislative purpose or that “might [even] reveal
    sensitive personal details having no relationship to the Committees’ legislative
    purposes.”    Maj. Op. at 84 (emphasis added).         The majority remands for a
    culling process pursuant to which information disclosing, for instance, the
    payment of medical expenses would be exempt from disclosure.                 
    Id.
       The
    majority’s limited culling, however, is tightly restricted to specified categories of
    information, leaving out almost all “business‐related financial documents” from
    any review by the district court, 
    id.,
     irrespective of any threatened harm from
    disclosure, and potentially leaving out substantial personal information as well.
    7
    Indeed, given the tight limitations imposed by the majority on the district court’s
    review, even sensitive records reflecting personal matters unrelated to any
    conceivable legislative purpose could potentially be disclosed.
    I agree with the majority that remand is necessary. But we disagree as to
    the reasons why. I conclude that the present record is insufficient to support the
    majority’s determination that the voluminous records of Plaintiffs sought from
    Deutsche Bank AG (“Deutsche Bank”) and Capital One Financial Corporation
    (“Capital One”) should at this time be produced. 5        The majority concludes in
    advance—before these records have been assembled—that only a select “few
    documents” will implicate privacy concerns or bear “such an attenuated
    relationship” to any legislative purpose that “they need not be disclosed.” Maj.
    Op. at 85 (emphasis added).       I disagree that the present record is sufficient to
    make that determination or to conclude, more fundamentally, where the balance
    of hardships lies with regard to the preliminary relief that the Plaintiffs seek. In
    this sensitive separation‐of‐powers context, serious questions have been raised as
    5  The Plaintiffs challenge the subpoenas as they relate to the banking records of
    President Donald J. Trump, his family, and his businesses—the Plaintiffs here. Trump
    Br. at 1. To the extent the subpoenas seek other information related to parties who are
    not Plaintiffs, the subpoenas have not been challenged and are not part of this appeal.
    8
    to the historical precedent for these subpoenas; whether Congress has employed
    procedures sufficient to “prevent the separation of power from responsibility,”
    Watkins, 
    354 U.S. at 215
    , in seeking this President’s personal information; and
    whether the subpoenas are supported by valid legislative purposes and seek
    information reasonably pertinent to those purposes, see Quinn v. United States, 
    349 U.S. 155
    , 161 (1955) (noting that Congress’s power to investigate “cannot be used
    to inquire into private affairs unrelated to a valid legislative purpose”). These
    questions, like the balance of hardship question, also require further review.
    As set forth herein, I would remand, directing the district court promptly to
    implement a procedure by which the Plaintiffs may lodge their objections to
    disclosure with regard to specific portions of the assembled material and so that
    the Committees can clearly articulate, also with regard to specific categories of
    information, the legislative purpose that supports disclosure and the pertinence of
    such information to that purpose. The objective of this remand is the creation of
    a record that is sufficient more closely to examine the serious questions that the
    Plaintiffs have raised and to determine where the balance of hardships lies with
    regard to an injunction in this case, and concerning particular categories of
    information. The district court acknowledged that in a routine civil case, it would
    9
    not have ordered the disclosures here. The majority errs in implicitly concluding
    that a President has less protection from the unreasonable disclosure of his
    personal and business affairs than would be afforded any litigant in a civil case.
    Only on the basis of this fuller record would I determine the question
    whether a preliminary injunction should have issued, and with regard to what
    portions of the records sought. In reaching this conclusion, I am guided by the
    Supreme Court’s counsel in Rumely that in the context of delicate constitutional
    issues involving limits on the investigative power of Congress, our duty is to avoid
    pronouncement “unless no choice is left.” Rumely, 
    345 U.S. at 46
    ; cf. Cheney, 
    542 U.S. at
    389–90 (suggesting that courts should “explore other avenues” to avoid
    adjudicating “overly broad discovery requests” and “unnecessarily broad
    subpoenas” that present “collision course” conflicts between coequal branches).
    Indeed, Rumely affirms that the duty of constitutional avoidance is “even more
    applicable” in the context of congressional investigations “than to formal
    legislation.” Rumely, 
    345 U.S. at 46
    ; see also Tobin v. United States, 
    306 F.2d 270
    , 275
    (D.C. Cir. 1962) (recognizing duty of courts in appropriate circumstances to avoid
    “passing on serious constitutional questions” presented by Congress’s exercise of
    10
    its investigative power). Decision here may be required, but is premature on the
    present record.
    Remand will also afford the parties an opportunity to negotiate. This is not
    the essential point of the remand I propose, but efforts at negotiation in this context
    are to be encouraged, since they may narrow the scope of these subpoenas, and
    thus avoid judicial pronouncement on the “broad confrontation now tendered.”
    United States v. Am. Tel. & Tel. Co (AT&T I), 
    551 F.2d 384
    , 395 (D.C. Cir. 1976). The
    Plaintiffs have repeatedly sought the opportunity to negotiate. Reply Br. at 6–7;
    Tr. of Oral Arg. at 17:18–19, 18:3–20, 66:7‐67:2.          And the Committees, while
    preferring the more immediate disposition that the majority affords them, have
    expressed a willingness to attempt negotiation on an expedited basis if requested
    by this Court.6 Tr. of Oral Arg. at 46:8–19.
    6 Before this Court, counsel for the Committees stated that “[i]f this court thinks
    there should be negotiation . . . [p]lease make it really, really fast, because we think that
    Mr. Trump’s statements make clear this is absolutely insincere . . . [b]ut fine, give us a
    day.” Tr. of Oral Arg. at 46:8‐15. Counsel for the Plaintiffs specifically affirmed in
    response that “I don’t think there is any basis to determine that we are being insincere,
    and I certainly welcome, I think that we have made clear, sending this case back down
    for judicially refereed negotiations on whatever timeline the court thinks is appropriate
    is absolutely something we are willing to participate in in good faith.” Tr. of Oral Arg.
    at 66:21‐67:2.
    Referencing an October 8, 2019 letter from Pat A. Cippolone, Counsel to the
    President, to the Speaker of the House of Representatives and three House committee
    chairs (a letter that is not part of the record before us), the majority concludes that a
    11
    To be clear, and as set forth herein, the Plaintiffs have raised serious
    questions on the merits as to these subpoenas, which implicate profound
    separation‐of‐powers concerns. 7        But pending the full remand that I outline
    remand for negotiation is futile because the President has prohibited certain members of
    the Administration from appearing in connection with the ongoing impeachment
    inquiry. Maj. Op. at 71–72, 72 n.66. With respect, however, this letter references only
    the “impeachment inquiry” and not the legislative investigations at issue here. This
    letter thus provides no basis for this Court to disregard the express representations of the
    Plaintiffs’ attorney that the Plaintiffs, including the President, seek to negotiate in good
    faith.
    7  The majority suggests that these subpoenas do not implicate separation of
    powers because, inter alia, President Trump is not suing in his official capacity. Maj. Op.
    at 70. I disagree. As in Rumely, “we would have to be that ‘blind’ Court . . . that does
    not see what ‘(a)ll others can see and understand,’” not to recognize that these subpoenas
    target the President in seeking personal and business financial records of not only the
    President himself, but his three oldest children and members of their immediate family,
    plus the records of the Trump Organization and a litany of organizations with which the
    President is affiliated. Rumely, 
    345 U.S. at 44
     (quoting Bailey v. Drexel Furniture Co., 
    259 U.S. 20
    , 37 (1922)); see also 
    id.
     (acknowledging “wide concern, both in and out of Congress,
    over some aspects of the exercise of the congressional power of investigation”); cf. Dep’t
    of Commerce v. New York, 
    139 S. Ct. 2551
    , 2575 (2019) (noting that courts are “’not required
    to exhibit a naiveté from which ordinary citizens are free’’’(quoting United States v.
    Stanchich, 
    550 F.2d 1294
    , 1300 (2d Cir. 1977) (Friendly, J.))). Indeed, the Committees
    themselves acknowledge that “President Trump and the Trump Organization” are the
    focus of their investigations, see 165 Cong. Rec. H2698 (daily ed. Mar. 13, 2019) (statement
    of Rep. Waters), and that “given the closely held nature of the Trump Organization,”
    investigation must “include [the President’s] close family members,” District Court Doc.
    No. 51 at 25–26. To be sure, Presidents are not immune from legislative subpoenas.
    But as I explain below, this dragnet around the President implicates separation‐of‐powers
    concerns for this and future Presidents, supporting a remand as to all the Plaintiffs here.
    To the extent that certain of the requested records may ultimately be found not to
    implicate separation‐of‐powers concerns, such a determination can only properly be
    made following a remand for development of the record.
    12
    herein, I defer for now the question whether they have also shown a balance of
    hardships tipping decidedly in their favor. The remainder of this opinion sets
    out the reasons for my conclusions:     (1) that the Plaintiffs have raised serious
    constitutional questions as to these legislative subpoenas; and (2) that the serious
    question formulation of the preliminary injunction standard is applicable,
    contrary to the majority’s position.
    I
    A
    To reiterate, the subpoenas here are very troubling.       Congress “cannot
    legislate wisely or effectively in the absence of information respecting the
    conditions which the legislation is intended to affect or change.”    Eastland, 
    421 U.S. at 504
    .       At the same time, ill‐conceived inquiries by congressional
    committees “can lead to ruthless exposure of private lives in order to gather data”
    that is unrelated and unhelpful to the performance of legislative tasks. Watkins,
    
    354 U.S. at 205
    .     And the “arduous and delicate task” of courts seeking to
    accommodate “the congressional need for particular information” with the
    individual’s “personal interest in privacy,” 
    id. at 198
    , does not grow easier when
    Congress seeks a President’s personal information.     Indeed, given the “unique
    13
    constitutional position of the President” in our scheme of government, see Franklin
    v. Massachusetts, 
    505 U.S. 788
    , 800 (1992), and the grave importance of diligent and
    fearless discharge of the President’s public duties, our task grows more difficult.
    See Nixon v. Fitzgerald, 
    457 U.S. 731
    , 753 (1982) (recognizing that distraction from
    public duties is “to the detriment of not only the President and his office but also
    the Nation that the Presidency was designed to serve”).
    The majority disagrees.   It concludes that this case “does not concern
    separation of powers” because the sought‐after records are personal, not official,
    and because Congress “has not arrogated to itself any authority of the Executive
    Branch,” nor “sought to limit any authority of the Executive Branch.” Maj. Op.
    at 89.     With respect, however, this conclusion gives too short shrift to the
    Supreme Court’s analysis in Clinton v. Jones, 
    520 U.S. 681
     (1997), on which the
    majority principally relies. There, the Supreme Court concluded that permitting
    a civil case to go forward “relat[ing] entirely to the unofficial conduct of the
    individual who happens to be the President” did not represent a per se
    impermissible intrusion by the federal judiciary on executive power and that the
    doctrine of separation of powers did not impose a categorical rule that all such
    private actions must be stayed against the President while in office.    
    Id. at 701
    ,
    14
    705–06. At the same time, however, the Court recognized that it is insufficient
    that a branch “not arrogate power to itself”: “the separation‐of‐powers doctrine
    [also] requires that a branch not impair another in the performance of its constitutional
    duties.” 
    Id. at 701
     (emphasis added) (quoting Loving v. United States, 
    517 U.S. 748
    ,
    757 (1996)); see also Nixon v. Admin’r of Gen. Servs., 
    433 U.S. 425
    , 443–45 (1977).
    And as for the judiciary in the context of private litigation against a sitting
    President, “[t]he high respect that is owed to the office of the Chief Executive,” the
    Court recognized, “though not justifying a rule of categorical immunity, is a
    matter that should inform the conduct of the entire proceeding, including the
    timing and scope of discovery.” Id. at 707; see also Fitzgerald, 
    457 U.S. at
    751–56
    (noting that the “special nature of the President’s constitutional office and
    functions,” 
    id. at 756
    , and the “singular importance,” 
    id. at 751
    , of her duties
    require particular “deference and restraint,” 
    id. at 753
    , in the conduct of litigation
    involving the President).
    The majority concludes that legislative subpoenas to third parties targeting
    a President’s personal or financial information, however broad and tangentially
    connected to any legislative purpose, do not seriously implicate separation of
    powers on the theory that “any concern arising from the risk of distraction in the
    15
    performance of the [President’s] official duties is minimal,” Maj. Op. at 90, perhaps
    less than that, 
    id.
     at 103–05, at least as compared to the potential burden of standing
    trial in a civil case while President, which Jones held is not categorically prohibited
    by separation‐of‐powers concerns. 8          But this analysis is flawed in two key
    respects.
    First, the Jones Court concluded that the burden in that case—namely, a civil
    suit against the President while in office—did not categorically constitute a
    “constitutionally forbidden impairment of the Executive’s ability to perform its
    constitutionally mandated functions” in light of the long history of judicial review
    of executive action and of presidential amenability to judicial process. 
    520 U.S. at 702
    ; see also 
    id.
     at 701–06. In assessing the separation‐of‐powers issue, the Court
    8 The majority also relies on the fact that President Trump seeks a preliminary
    injunction in his individual capacity, not his official capacity, and that the United States
    has filed an amicus curiae brief rather than a motion to intervene in asserting its view that
    this case presents “thorny constitutional questions involving separation of powers” and
    that the district court’s order should be reversed. Brief of United States as Amicus
    Curiae at 27; see Maj. Op. at 91 n.76. In Jones itself, however, President Clinton
    proceeded in his individual capacity and the United States filed an amicus brief
    addressing its separation‐of‐powers concerns. The Court nonetheless noted that “[t]he
    representations made on behalf of the Executive Branch as to the potential impact” of a
    rule permitting private litigation to proceed against a sitting President “merit . . .
    respectful and deliberate consideration,” 
    520 U.S. at
    689–90, and concluded, as already
    observed, that as to any civil action regarding personal conduct permitted to proceed,
    “the conduct of the entire proceeding, including the timing and scope of discovery,”
    should be informed by respect for the Office of Chief Executive, 
    id. at 707
    .
    16
    heavily weighed the pragmatic accommodation between the judiciary and the
    executive demonstrated by longstanding interbranch practice. See 
    id.
     at 704–05
    (discussing historical practice and the manner in which the judiciary has
    permissibly burdened the Executive Branch). It directed inferior courts that even
    as it rejected a rule of categorical immunity, the President’s unique role in the
    constitutional framework should inform the entire conduct of any civil action, 
    id. at 707
    , and that “the availability of sanctions” would “provide[] a significant
    deterrent to litigation directed at the President in his unofficial capacity for
    purposes of political gain or harassment,” 
    id.
     at 708–09. The Jones Court was thus
    solicitous of separation‐of‐powers concerns in the context of litigation over a
    President’s personal conduct; moreover, it continued a long tradition of placing
    “great weight” on historical practice in addressing questions “concern[ing] the
    allocation of power between two . . . branches of Government,” NLRB v. Noel
    Canning, 
    573 U.S. 513
    , 524 (2014) (quoting The Pocket Veto Case, 
    279 U.S. 655
    , 689
    (1929)).9
    9 The high value placed on historical practice “is neither new nor controversial.”
    Noel Canning, 573 U.S. at 525. James Madison observed that a “regular course of
    practice” could “liquidate & settle” constitutional meaning in the face of “difficulties and
    differences of opinion” involved in the practice of government under the Constitution.
    James Madison, Letter to Spencer Roane (Sept. 2, 1819), in 8 Writings of James Madison 450
    (Gaillard Hunt ed., 1908)); see also Noel Canning, 573 U.S. at 525 (collecting cases stating
    17
    Here, the parties have not identified, and my own search has failed to
    unearth, any previous example, in any previous Congress, of a standing or
    permanent select committee of the House of Representatives or the Senate using
    compulsory process to obtain documents containing a President’s personal
    information from a third party in aid of legislation. Trump Br. at 14; Tr. of Oral
    Arg. at 34:24–35:4.      Historical practice instead suggests that, on the few past
    occasions on which a President’s personal documents have been subpoenaed from
    third parties, such requests have emanated either from a special committee
    established and authorized to pursue a specific, limited investigation or from a
    committee proceeding under the impeachment power. 10                   It is possible that a
    the relevance of past practice to separation‐of‐powers issues).
    10 President Andrew Johnson had his personal bank records examined as part of
    his impeachment, but those records appear to have been relevant because of personal
    loans made to him by the Treasury Department. See Stephen W. Stathis, Executive
    Cooperation: Presidential Recognition of the Investigative Authority of Congress and the Courts,
    
    3 J.L. & Pol. 183
    , 219 (1986); see also Michael Les Benedict, The Impeachment of President
    Andrew Johnson, 1867–68, in 1 Congress Investigates: A Critical and Documentary History 254,
    264–68 (Roger A. Bruns et al. eds., rev. ed. 2011). President Clinton may have had some
    financial information, or at the very least some financial information of then–First Lady
    Hillary Clinton, examined by the Whitewater Special Committee, though it appears to
    have been turned over voluntarily. See S. Rep. No. 104‐280, at 155–61 (1996). The
    House and Senate Banking Committees also appear to have subpoenaed witnesses to
    testify regarding Whitewater and the death of Vince Foster; however, they do not appear
    to have subpoenaed the President’s personal financial information. See Stephen
    Labaton, The Whitewater Affair: The Hearing; House Committee Told of Contacts Over
    Whitewater, N.Y. Times, July 27, 1994, at A1 (describing testimony); Raymond W. Smock,
    18
    contrary example exists.        But the historical precedent for the congressional
    subpoenas here, in contrast to the judicial processes assessed in Jones, is sparse at
    best, and perhaps nonexistent.11 And this paucity of historical practice alone is
    The Whitewater Investigation and Impeachment of President Bill Clinton, 1992–98, in 2 Congress
    Investigates: A Critical and Documentary History, supra, at 1041, 1044–45. President Nixon
    voluntarily disclosed several years of tax returns to a House Committee; that same
    Committee used statutory authority not at issue here to procure additional information
    from the IRS. See S. Rep. No. 93‐768, at 1–3 (1974); Memorandum from Richard E. Neal,
    Chairman, to the Members of the H. Comm. on Ways and Means 3 (July 25, 2019),
    https://perma.cc/UYZ2‐QTCU. Other investigations do not appear to have involved
    either subpoenas of the President’s personal financial information or subpoenas to third
    parties to obtain documents concerning the President in a personal capacity. See
    generally Stathis, supra.
    11  Notably, the dearth of historical practice here may be partially attributable to
    the fact that “[t]he authority to issue a subpoena was once delegated from the full House
    to its committees very sparingly because the power appears long to have been deemed
    too serious a matter for general delegation.” Todd David Peterson, Contempt of Congress
    v. Executive Privilege, 
    14 U. Pa. J. Const. L. 77
    , 106 (2011) (internal quotation marks and
    citation omitted). It appears that the House did not authorize standing committees to
    issue subpoenas until 1975. Id. at 107. Moreover (and more generally), it should also
    be noted that disputes between the two elected branches over congressional subpoenas
    have historically been resolved through a process of direct negotiation and
    accommodation between these two branches, undertaken outside the supervision of the
    federal courts. See, e.g., Comm. on Judiciary, U.S. House of Representatives v. Miers, 
    558 F. Supp. 2d 53
    , 56–57 (D.D.C. 2008) (noting that “negotiation and accommodation . . . most
    often leads to resolution of disputes between the political branches” and “strongly
    encourag[ing] the political branches to resume their discourse and negotiations in an
    effort to resolve their differences constructively”). The majority rejects this approach
    due to its view that this case does not involve separation of powers, Maj. Op at 69–73;
    however, given the expressed willingness of the parties to negotiate and my view that
    separation‐of‐powers concerns are present here, the traditional practice of further
    negotiation is a viable resolution.
    19
    reason for courts to pause in assessing this dispute between a President and two
    House committees.12
    The second flaw in the majority’s analysis lies in its assumption that third‐
    party subpoenas of this sort pose, at best, “minimal” risk of distraction to this and
    future Presidents. Maj. Op. at 90. Contrary to the majority’s suggestion, it is not
    at all difficult to conceive how standing committees exercising the authority to
    issue third‐party subpoenas in aid of legislation might significantly burden
    presidents with myriad inquiries into their business, personal, and family affairs.
    See Watkins, 
    354 U.S. at 205
     (recognizing potential for “ruthless exposure of private
    lives” by committees seeking information “neither desired by the Congress nor
    useful to it”); cf. Jones, 
    520 U.S. at
    701–02 (considering the likelihood that frivolous
    civil litigation against the President could overly burden the Executive Branch).
    Jones relied on the relative rarity of civil litigation against past presidents to
    discount concerns of distraction, see 
    520 U.S. at 702
    , but the subjects on which
    12This Court’s recent decision in Trump v. Vance, 
    941 F.3d 631
     (2d. Cir. 2019), is not
    to the contrary. The Vance panel explicitly relied on the “long‐settled” amenability of
    presidents to judicial process, and in particular to subpoenas issued as part of a criminal
    prosecution, to inform its holding that the state grand jury subpoena to a third‐party
    custodian of the President’s tax returns at issue in that case was lawful. See id. at 640
    (discussing the historical practice of ordering presidents to comply with grand jury
    subpoenas). Here, there is no such longstanding practice, and the subpoenas in
    question were not issued by a grand jury as part of a criminal investigation.
    20
    legislation might be had are vast.13 And the risk of undue distraction from ill‐
    conceived inquiries might be particularly acute today, in an era in which (as the
    Supreme Court and individual Justices have repeatedly acknowledged) digital
    technologies have lodged an increasingly large fraction of even our most intimate
    information in third‐party hands. See, e.g., Riley v. California, 
    573 U.S. 373
    , 395
    (2014) (discussing how “Internet search and browsing history” can “reveal an
    individual’s private interests or concerns”); Carpenter v. United States, 
    138 S. Ct. 2206
    , 2261 (2018) (acknowledging “powerful private companies” collecting “vast
    quantities of data about the lives of ordinary Americans”) (Alito, J., dissenting);
    United States v. Jones, 
    565 U.S. 400
    , 417 (2012) (noting that in the digital age, “people
    13
    To be clear, while civil litigation against sitting presidents is unusual, presidents
    are routinely the subjects of congressional investigation while in office—as they must be,
    and for appropriate reasons. But there is no substantial historical precedent for the use
    of subpoena power to obtain a President’s personal information from a third party in aid
    of legislation. And as to such subpoenas, there is no analogue for the possibility of
    sanctions in the civil litigation context, which the Jones Court relied on as “provid[ing] a
    significant deterrent to litigation directed at the President in his unofficial capacity for
    purposes of political gain or harassment.” 
    520 U.S. at
    708–09. Nor do established rules
    of procedure provide a mechanism for narrowing congressional subpoenas so as to avoid
    “embarrassment, oppression, or undue burden.” Fed. R. Civ. P. 26(c)(1). Historically,
    in those few instances in which investigators have sought a President’s personal
    documents, Congress has instead typically proceeded pursuant to the political checks
    inherent in the invocation of impeachment authority or the narrow authorization
    afforded to a special committee.
    21
    reveal a great deal of information about themselves to third parties in the course
    of carrying out mundane tasks”) (Sotomayor, J., concurring).
    To be clear, this is not to suggest that a President is immune from legislative
    subpoenas into personal matters—not at all. But as the D.C. Circuit recognized
    in Trump v. Mazars (while concluding that the House Committee on Oversight and
    Reform possessed authority to issue a legislative subpoena to President Trump’s
    accounting firm), “separation‐of‐powers concerns still linger in the air” with
    regard to such subpoenas. Trump v. Mazars USA, LLP, 
    940 F.3d 710
    , 726 (D.C. Cir.
    2019). And in such a circumstance, there is reason to conclude that courts must
    not only undertake the “arduous and delicate task” of “[a]ccommodat[ing] . . . the
    congressional need for particular information with the individual and personal
    interest in privacy,” Maj. Op. at 51 (quoting Watkins, 
    354 U.S. at 198
    ). They must
    also take on the equally sensitive task of ensuring that Congress, in seeking the
    President’s personal information in aid of legislation, has employed “procedures
    which prevent the separation of power from responsibility,” Watkins, 
    354 U.S. at 215
     (discussing such procedures in the context of a threat to individual rights from
    congressional investigations), and which ensure due consideration to the
    separation‐of‐powers concerns that the Supreme Court identified and deemed
    22
    essential for judicial respect in Jones. See Jones, 
    520 U.S. at 707
     (noting that “high
    respect that is owed to the office of the Chief Executive,” while not mandating
    categorical immunity from suit for private conduct while in office, should “inform
    the conduct of the entire proceeding, including the timing and scope of
    discovery”); Cheney, 
    542 U.S. at 385
     (noting that President’s “constitutional
    responsibilities and status [are] factors counseling judicial deference and restraint”
    in conduct of litigation) (quoting Fitzgerald, 
    457 U.S. at 753
     (alteration in Cheney)).
    B
    These subpoenas are deeply problematic when considered against the
    backdrop of these separation‐of‐powers concerns. In fact, this much is evident
    from even cursory consideration of the differences between the present case and
    Mazars, the only other precedent directly addressing a legislative subpoena served
    on a third party and seeking a President’s personal financial information.14 In
    Mazars, the D.C. Circuit recently upheld a legislative subpoena directed at the
    14 As noted at the outset, see supra page 5, the parties are unable to cite any
    Congress before this one in which a standing committee of the House of Representatives
    has issued a third‐party subpoena for documents targeting a President’s personal
    information solely in aid of legislation. The practice appears to have begun with the
    committees of this House of Representatives, which has issued such subpoenas
    repeatedly, thus raising the separation‐of‐powers concerns discussed herein.
    23
    President’s accounting firm, concluding that it had properly issued in connection
    with the consideration of changes to laws relating to financial disclosures required
    of Presidents.15   Mazars, 940 F.3d at 748.       At the same time, the Mazars Court
    pointedly suggested that the articulation of just any rationale for concluding that
    a sitting President’s personal information might inform a committee in
    considering potential legislation is not enough to state a valid legislative purpose:
    Just as a congressional committee could not subpoena
    the President’s high school transcripts in service of an
    investigation into K‐12 education, nor subpoena his
    medical records as part of an investigation into public
    health, it may not subpoena his financial information
    except to facilitate an investigation into presidential
    finances.
    15 Judge Rao dissented, concluding that even assuming the Committee on
    Oversight and Reform had a legislative purpose, it had also asserted an intent to
    determine “whether the President broke the law,” an inquiry that “must be pursued
    through impeachment,” and not via Congress’s authority to investigate for legislative
    purposes. Mazars, 940 F.3d at 748 (Rao, J., dissenting). In the instant case, given the
    need for remand here, I need not now determine whether the House Committees have
    avowed such an intent, so I have no occasion to consider the arguments raised in Judge
    Rao’s thorough analysis. However, it is worth noting that nowhere in the Mazars
    majority or Judge Rao’s extensive discussion of historical practice, id. at 718–24 (majority
    opinion), 757–67 (Rao, J., dissenting), is there any hint of a prior occasion on which a
    standing or permanent select committee has used compulsory process to obtain
    documents targeting a President’s personal information from a third party justified solely
    on the basis of future legislation.
    24
    Id. at 733. Key to the result in Mazars, then (and assuming, arguendo, that it was
    correctly decided) was the majority’s conclusion that there was “no inherent
    constitutional flaw in laws requiring Presidents to publicly disclose financial
    information” and that the subpoena on its face thus properly sought relevant
    information “about a subject on which legislation may be had.”                 Id. at 737
    (quoting Eastland, 
    421 U.S. at 508
    ).
    This case is significantly different, at least as to the subpoenas issued by the
    Committee on Financial Services. This Committee seeks a universe of financial
    records sufficient to reconstruct over a decade of the President’s business and
    personal affairs, not in connection with the consideration of legislation involving
    the Chief Executive, but because the President, his family, and his businesses
    present a “useful case study,” according to the Committee, for an inquiry into the
    lending practices of institutions such as Deutsche Bank and Capital One.16 District
    Court Doc. No. 51 at 25.         More specifically, the Committee is investigating
    16  The Capital One subpoena, moreover, seeks the President’s personal and
    business financial records starting from the exact date on which he became the
    Republican nominee for President—an unusual date, to be sure, for specifying the precise
    moment at which his banking records became a useful point of inquiry into the possibility
    of tightening up the regulation of lending practices with potentially “broad effects on the
    national economy.” District Court Doc. No. 51 at 25.
    25
    “whether existing policies and programs at financial institutions are adequate to
    ensure the safety and soundness of lending practices and the prevention of loan
    fraud,” id. at 12, as well as “industry‐wide compliance with banking statutes and
    regulations, particularly anti‐money laundering policies,” id. at 13.             The
    Committee urges that “[b]ecause of his prominence, much is already known about
    Mr. Trump, his family, and his business, and this public record establishes that
    they serve as a useful case study for the broader problems” under its
    consideration. 17   Id. at 25.   The majority endorses this statement of legislative
    purpose and intimates (albeit with no evidence in the record before us) that past
    transactions between Deutsche Bank and the President in his pre‐presidential
    business life may have violated banking regulations and that “no other bank
    would extend credit” to President Trump. Maj. Op. at 73 n.67, 74.
    To be sure, legislative subpoenas issue not when all is known, but on the
    reasonable theory that “[a] legislative body cannot legislate wisely or effectively”
    17 The House Financial Services Committee asserts that the subpoenas’ objective
    can be derived in part from House Resolution 206, which affirms that the House
    “supports efforts to close loopholes that allow corruption, terrorism, and money
    laundering to infiltrate our country’s financial system.” H.R. Res. 206, 116th Cong.
    (2019). House Resolution 206, however, does not materially aid in defining more clearly
    the reasons for the Committee’s “case study” approach, as it does not call for a
    congressional investigation, much less one by a designated committee, nor does it
    reference the President and his family.
    26
    without obtaining “information respecting the conditions which the legislation is
    intended to affect or change.”        Eastland, 
    421 U.S. at 504
     (quoting McGrain v.
    Daugherty, 
    273 U.S. 135
    , 175 (1927) (alteration in Eastland)).          But the rationale
    proffered for these subpoenas of the House Financial Services Committee falls far
    short of demonstrating a clear reason why a congressional investigation aimed
    generally at closing regulatory loopholes in the banking system need focus on over
    a decade of financial information regarding this President, his family, and his
    business affairs. 18    Nor does the proffered rationale reveal how the broad
    purposes pursued by the Committee are consistent with the granular detail that
    these subpoenas seek. See Watkins, 
    354 U.S. at 204
     (noting the troubling tendency
    of some legislative investigations to “probe for a depth of detail . . . removed from
    any basis of legislative action” and to “turn their attention to the past to collect
    minutiae on remote topics”).
    18 Thus, the majority references the fact that Deutsche Bank “has been fined in
    connection with a $10 billion money laundering scheme.” Maj. Op. at 73 n.67. But the
    record is devoid of any claim, much less any evidence, that this fine had anything at all to
    do with the President, his children, his business organizations, or his business associates,
    all of whom will be irreparably harmed by the majority’s endorsement of the “case study”
    approach of the House Financial Services Committee.
    27
    This is a reason for pause. As suggested by Judge Katsas in his dissent
    from the denial of rehearing in banc in Mazars, the “uncompromising extension of
    McGrain v. Daugherty” to this new context raises the serious question whether
    future Presidents will be routinely subject to the distraction of third‐party
    subpoenas emanating from standing committees in aid of legislation—a practice
    for which there is scant historical precedent, as already discussed.          Trump v.
    Mazars USA, LLP, No. 19‐5142, 
    2019 WL 5991603
    , at *1 (D.C. Cir. Nov. 13, 2019)
    (Katsas, J., dissenting from the denial of rehearing en banc).       Some case study
    rationale (in this instance, to learn whether regulators were adequately equipped
    to scrutinize Deutsche Bank’s and Capital One’s lending practices in relation to the
    President before he obtained the Office of Chief Executive) will always be present.
    But the regular issuance of third‐party legislative subpoenas by single committees
    of one House of Congress targeting a President’s personal information would be
    something new, potentially impairing public perceptions of the legislative branch
    by fueling perceptions that standing committees are engaged, not in legislating,
    but in opposition research.19 More relevant here, such investigative practices by
    19 Such subpoenas, moreover, will inevitably result, as here, in recourse to the
    courts, potentially embroiling them, as well, in political battles between committees of
    Congress and the President.
    28
    Congress, undertaken “more casually and less responsibly” than is the
    constitutional ideal, see Rumely, 
    345 U.S. at 46
    , pose a serious threat to “presidential
    autonomy and independence,” Mazars, 
    2019 WL 5991603
    , at *1 (Katsas, J.,
    dissenting from the denial of rehearing en banc). And this is a substantial concern
    in our constitutional scheme, which relies on the proposition that the occupant of
    the Office of Chief Executive is positioned to “‘deal fearlessly and impartially with’
    [its] duties,” even as Presidents may be “easily identifiable target[s]” of legal
    process, personally vulnerable by virtue of the “visibility of [the] office and the
    effect of [their] actions on countless people.”       Fitzgerald, 
    457 U.S. at
    752–53
    (quoting Ferri v. Ackerman, 
    444 U.S. 193
    , 203 (1979)).
    To be sure, the third subpoena to Deutsche Bank, which is identical to the
    Deutsche Bank subpoena issued by the Committee on Financial Services, emanates
    from the Permanent Select Committee on Intelligence and is more closely linked
    to the consideration of legislation related to the Office of the Chief Executive and
    to this President’s affairs, as a recent candidate. 20       The majority is correct,
    20As the majority states, the Chair of the Intelligence Committee has publicly
    affirmed that the Committee is investigating matters related to interference by the
    Russian government in the U.S. political process and that the information sought from
    Deutsche Bank will inform legislative proposals to protect this process from foreign
    influence. Maj. Op at 62–64. The House Intelligence Committee, moreover, has an
    oversight function to which its subpoena could conceivably relate. At the same time,
    29
    moreover, that once presented with adequate evidence of legislative authorization
    and purposes, it is not the province of courts to inquire into legislators’ motives,
    see Maj. Op. at 50–51, and that “motives alone would not vitiate an investigation
    which had been instituted by a House of Congress if that assembly’s legislative
    purpose is being served.” Watkins, 
    354 U.S. at 200
    .
    At the same time, as the majority also affirms, the record must provide
    “sufficient evidence of legislative authorization and purposes to enable
    meaningful judicial review.” Maj. Op. at 55. And this is particularly the case
    when a congressional investigation even potentially trenches upon constitutional
    however, no House resolution appears specifically to reference this investigation, at least
    as it relates to efforts to seek the President’s financial information, nor is such a legislative
    purpose easy to square with the extraordinary breadth of the Deutsche Bank subpoenas.
    The Chair, moreover, has also affirmed that the Committee’s investigation is in
    furtherance of Congress’s duty to “ensure that U.S. officials—including the President—
    are serving the national interest and, if not, are held accountable.” Press Release,
    Permanent Select Comm. on Intelligence, Chairman Schiff Statement on House
    Intelligence Committee Investigation (Feb. 6, 2019), bit.ly/2UMzwTE. The Plaintiffs
    argue that the subpoena is thus not in furtherance of legislative purposes, but represents
    an effort by the Committee to itself conduct intelligence and law enforcement activities.
    Trump Br. at 35–36. Indeed, at oral argument, the Committees’ lawyer appeared
    explicitly to equate these subpoenas to those issued in connection with federal criminal
    investigations. Tr. of Oral Arg. at 59:14–60:2. While I do not decide whether the
    Intelligence Committee has affirmatively avowed an improper purpose, the amorphous
    nature of the Committee’s legislative purpose would be clarified by my proposed
    remand, as would the connection between this purpose and the particular disclosures
    that are sought.
    30
    limits on Congress’s investigative power. See Rumely, 
    345 U.S. at 46
     (noting that
    such limits should be identified by courts only after “Congress has . . .
    unequivocally authoriz[ed] an inquiry of dubious limits”).       Indeed, in such
    circumstances, the Supreme Court has made clear that courts are to look to the
    “instructions to an investigating committee,” as “embodied in the authorizing
    resolution,” to ascertain whether the legislative assembly has “assay[ed] the
    relative necessity of specific disclosures.”     Watkins, 
    354 U.S. at 201, 206
    .
    Considered in light of the separation‐of‐powers concerns that persist with regard
    to these subpoenas, the Plaintiffs have raised a serious question on this front as
    well.
    As to both the House Financial Services and Intelligence Committee
    subpoenas, there is an open question as to whether these subpoenas have been
    authorized by the House of Representatives in a manner permitting this Court to
    determine whether they are “in furtherance of . . . a legitimate task of the
    Congress.”    Watkins, 
    354 U.S. at 187
    .    As the Watkins Court explained, “[t]he
    theory of a committee inquiry is that the committee members are serving as the
    representatives of the parent assembly in collecting information for a legislative
    purpose” and that “the House or Senate shall have instructed the committee
    31
    members on what they are to do with the power delegated to them.” 
    Id.
     at 200–
    01.   The majority acknowledges Watkins’s requirement that an authorizing
    resolution “spell out [an investigating committee’s] jurisdiction and purpose with
    sufficient particularity” as to ensure that “compulsory process is used only in
    furtherance of a legislative purpose.”           
    Id. at 201
    ; see Maj. Op. at 51, 79–80.
    Critically, moreover, the majority itself recognizes that “[i]t is not clear whether
    this passage can be satisfied” with regard to these subpoenas by the principal
    instruction in place here, at the time the subpoenas issued:                 namely, the
    instruction “that the House gives to a committee pursuant to a House rule defining
    a standing committee’s continuing jurisdiction.” Maj. Op. at 52–53.
    The majority treats House Resolution 507 as the cure‐all solution to this key
    uncertainty, rejecting the Plaintiffs’ argument that it is not properly considered on
    the subject of legislative authorization and purposes because it issued after the
    subpoenas themselves.21       But House Resolution 507 falls far short of a specific
    21 The majority’s support for this conclusion derives solely from cases discussing,
    in the contempt prosecution context, what evidence may be considered in evaluating
    whether a question posed to a witness before a congressional committee was pertinent to
    an investigation’s inquiry. See Watkins, 
    354 U.S. at
    201–02; Rumely, 
    345 U.S. at 48
    ; Shelton
    v. United States, 
    327 F.2d 601
    , 607 (D.C. Cir. 1963); see also Maj. Op. at 54–58. This issue
    is distinct from the threshold question of whether a committee is adequately authorized,
    so that the majority must necessarily reason by analogy, and its conclusion is far from
    inevitable, particularly in the context of third‐party subpoenas aimed at a President’s
    32
    “authorizing resolution” issued to make clear that a designated committee is to
    undertake an investigation on a particular subject within its domain. To be sure,
    McGrain found sufficient a resolution that did not “in terms avow that it [was]
    intended to be in aid of legislation,” on the theory that “the subject‐matter was
    such that [a] presumption should be indulged” that legislating “was the real
    object.”   
    273 U.S. at
    177–78.       But in a context like this, presenting serious
    constitutional concerns, courts “have adopted the policy of construing . . .
    resolutions . . . narrowly, in order to obviate the necessity of passing on serious
    constitutional questions.” Tobin, 
    306 F.2d at
    274–75. And this resolution on its
    face discusses none of the subpoenas here, nor even the work of the committees
    from which they issued. Instead, House Resolution 507 authorizes any subpoena,
    by any standing or permanent select committee, already issued or in the future to
    be issued, so long as it concerns the President, his family, or his business entities
    and organizations:
    personal information, where the President must be able efficiently (and without undue
    distraction) to determine what, if any, steps she should take, either to assist the inquiry
    or, as here, to litigate. I need not address this question, however, because, even
    assuming that Resolution 507 is properly considered, a serious question remains as to
    whether it constitutes what the majority acknowledges is required: “sufficient evidence
    of legislative authorization and purposes to enable meaningful judicial review.” Maj.
    Op. at 55.
    33
    Resolved, That the House of Representatives ratifies and
    affirms all current and future investigations, as well as all subpoenas
    previously issued or to be issued in the future, by any standing or
    permanent select committee of the House, pursuant to its jurisdiction
    as established by the Constitution of the United States and rules X and
    XI of the Rules of the House of Representatives, concerning or issued
    directly or indirectly to —
    (1)   the President in his personal or official capacity;
    (2)   his immediate family, business entities, or
    organizations;
    ...
    (9) any third party seeking information involving,
    referring, or related to any individual or entity described in
    paragraphs (1) through (7).
    H.R. Res. 507, 116th Cong. (2019); see also H.R. Res. 509, 116th Cong. § 3 (2019)
    (“House Resolution 507 is hereby adopted”).
    By purporting to authorize third‐party subpoenas for any and all past and
    future investigations into the President’s personal and official business, Resolution
    507 would appear to run directly into the primary concern in Watkins that
    “[b]roadly drafted and loosely worded” resolutions can “leave tremendous
    latitude to the discretion of investigators,” 
    354 U.S. at 201
    , and thus permit
    committees “in essence, to define [their] own authority,” 
    id. at 205
    . As Watkins
    emphasized, “[a]n essential premise” underlying the investigatory powers of a
    congressional committee to compel the production of documents or attendance by
    an individual “is that the House or Senate shall have instructed the committee
    34
    members on what they are to do with the power delegated to them.” 
    Id. at 201
    .
    Absent that instruction, such subpoenas defy judicial review, the Watkins Court
    understood, because “it is impossible . . . to declare that [a committee] has ranged
    beyond the area committed to it by its parent assembly.” 
    Id. at 205
    .
    To be clear, Watkins addressed this problem in the context of a House
    proceeding implicating a private citizen’s constitutional liberties, and not
    separation of powers. But its caution is still relevant: that “excessively broad
    charter[s]” to investigating committees make it difficult, if not impossible, for
    courts “to ascertain whether any legislative purpose justifies the disclosures
    sought and, if so, the importance of that information to the Congress in furtherance
    of its legislative function.” 
    Id.
     at 205–06. With respect, the majority thus errs in
    dismissing the Department of Justice’s concern that the blank‐check approach
    adopted here to authorizing third‐party subpoenas seeking personal information
    about the President and his family represents “a failure of the House to exercise
    ‘preliminary control of the Committee[s],’” see Brief of United States as Amicus
    Curiae at 19 (quoting Watkins, 
    354 U.S. at 203
    )—a failure which not only throws
    into question the adequacy of authorization in this case, but which also raises
    significant issues for the future regarding interbranch balance and the ability of
    35
    this and future Presidents to perform their duties without undue distraction, 
    id.
     at
    5–7; see Jones, 
    520 U.S. at 690
     (noting that “representations made on behalf of the
    Executive Branch as to the potential impact” of inquiries on the Office of the
    President “merit our respectful and deliberate consideration”). 22              In short,
    Resolution 507 itself, given its retrospective and prospective nature, and its
    purported authorization of any and all third‐party committee subpoenas seeking
    not only official, but personal information about the President, his family, and his
    businesses, presents a serious question as to whether the House has discharged its
    22  The Department of Justice argues that a clear statement rule should apply to the
    authorization of legislative subpoenas seeking a President’s personal information. Brief
    of United States as Amicus Curiae at 10. The majority dismisses this argument, noting
    that neither Franklin v. Massachusetts, 
    505 U.S. 788
    , nor Armstrong v. Bush, 
    924 F.2d 282
    (D.C. Cir. 1991), on which the Department relies, concern congressional subpoenas, but
    statutes “claimed to limit presidential power.” Maj. Op. at 89. But Rumely makes clear
    that the duty of constitutional avoidance (implemented, in part, through mechanisms
    such as clear statement rules) “is even more applicable” in the context of congressional
    investigations than in the interpretation of statutes. 
    345 U.S. at 46
    . It also affirms that
    “[w]henever constitutional limits upon the investigative power of Congress have to be
    drawn . . . , it ought only to be done after Congress has demonstrated its full awareness
    of what is at stake by unequivocally authorizing an inquiry of dubious limits.” 
    Id.
     In
    short, while I need not at this time reach the question, the Department’s clear statement
    argument merits serious consideration, as does its assertion that the House’s “blank‐
    check” approach to use of compulsory process directed at the President, his family, and
    his businesses runs afoul of Watkins’s caution that “[a] measure of added care on the part
    of the House and the Senate in authorizing the use of compulsory process” would help
    “prevent the separation of power from responsibility.” 
    354 U.S. at 215
    .
    36
    “responsibility . . . in the first instance, to insure that compulsory process is used
    only in furtherance of a legislative purpose.” Watkins, 
    354 U.S. at 201
    .
    II
    These third‐party legislative subpoenas thus raise serious questions on the
    merits, implicating substantial separation‐of‐powers concerns. In such a context,
    Rumely’s caution kicks in, which “counsel[s] abstention from adjudication unless
    no choice is left.”    
    345 U.S. at 46
    .     The majority disagrees, asserting that even
    assuming serious questions regarding the separation of powers have been raised,
    affirmance here is still required because our “serious questions” approach to
    whether a preliminary injunction should issue is unavailable in the context of these
    third‐party legislative subpoenas. 23       I have already outlined my disagreement
    23  The majority also argues that any serious questions presented here “are
    properly rejected at this stage of the litigation” because they “involve solely issues of
    law.” Maj. Op. at 101. I disagree. As an initial matter, our case law has recognized
    that, in appropriate circumstances, purely legal issues can present sufficiently serious
    questions to warrant a preliminary injunction. See, e.g., Haitian Centers Council, Inc. v.
    McNary, 
    969 F.2d 1326
    , 1339–40 (2d Cir. 1993) (finding sufficiently serious questions
    going to the merits based on the novel questions of law presented by plaintiffs’ claims),
    judgment vacated as moot by Sale v. Haitian Ctrs. Council, Inc., 
    509 U.S. 918
     (1993); see also,
    e.g., 11A Charles Alan Wright, Arthur R. Miller & Mary Kay Kane, Federal Practice and
    Procedure § 2948.3 (3d ed.) (Westlaw) (database updated August 2019) (referring to “the
    existence of a factual conflict, or of difficult questions of law,” as components of the merits
    showing in the preliminary injunction context (emphasis added)). Moreover, the
    majority itself is remanding for some development of the factual record. As set forth
    herein, I conclude that the majority’s limited remand is inadequate, and that the record
    37
    with the majority’s determination that “this case does not concern separation of
    powers,” Maj. Op. at 89, and that the questions raised, even if “serious in at least
    some sense, lack merit,” id. at 101.            I also disagree as to the supposed
    unavailability of our traditional preliminary injunction approach.             Indeed, I
    conclude, with respect, that the majority badly errs in deciding that this approach
    is unavailable in the sensitive context of challenges to congressional subpoenas.
    As the Supreme Court made clear in Winter v. Natural Resources Defense
    Council, Inc., “[a] plaintiff seeking a preliminary injunction must establish that he
    is likely to succeed on the merits, that he is likely to suffer irreparable harm in the
    absence of preliminary relief, that the balance of equities tips in his favor, and that
    an injunction is in the public interest.”       
    555 U.S. 7
    , 20 (2008).     The majority
    acknowledges that, as to the required merits showing, we have repeatedly said in
    this Circuit that “district courts may grant a preliminary injunction where a
    plaintiff . . . meets either of two standards: ‘(a) a likelihood of success on the
    merits, or (b) sufficiently serious questions going to the merits to make them a fair
    ground for litigation.’” Maj. Op. at 11–12 (quoting Kelly v. Honeywell Int’l, Inc.,
    
    933 F.3d 173
    , 184 (2d Cir. 2019)). When a plaintiff has demonstrated only “serious
    needs further factual development before the legal issues here can be adequately assessed.
    38
    questions” as to the merits, however, the plaintiff has a higher burden as to the
    third element: he must show that the balance of hardships tips decidedly in his
    favor.        See Kelly, 933 F.3d at 184; Maj. Op. at 11–12.            The majority also
    acknowledges that we have reaffirmed our traditional approach in the wake of the
    Supreme Court’s decision in Winter. See Citigroup, 
    598 F.3d at 38
     (“hold[ing] that
    our venerable standard for assessing a movant’s probability of success on the
    merits remains valid”). 24       Irreparable harm is not in question in this case,
    moreover, because, inter alia, the Plaintiffs have an interest in keeping their
    banking records private from Congress and neither House committee will commit
    to treating any portion of the voluminous personal and business records that they
    seek as confidential. J.A. at 122–23. In such circumstances, the majority and I
    are in agreement that compliance with these subpoenas will cause irreparable
    Citigroup carefully assessed Winter’s import and concluded that our traditional
    24
    approach is wholly consistent with that precedent and is properly retained, given “[t]he
    value of this circuit’s approach to assessing the merits of a claim at the preliminary
    injunction stage,” which “lies in its flexibility in the face of varying factual scenarios and
    the greater uncertainties inherent at the outset of particularly complex litigation.”
    Citigroup, 
    598 F.3d at 35
    . Moreover, Citigroup made clear that, under either the “serious
    questions” or the “likelihood of success” formulation, courts in this Circuit consider all
    four elements articulated by the Supreme Court in Winter. See 
    id. at 34
    , 38 (citing Winter,
    
    555 U.S. at 20
    ).
    39
    harm to the President, his family, his businesses, and his business associates.
    Maj. Op. at 13–14.
    The majority asserts that a preliminary injunction is nonetheless unavailable
    based on our “serious questions” formulation of the merits inquiry because of the
    so‐called “government action exception” to this formulation, as expressed by this
    Court’s decision in Plaza Health Laboratories, Inc. v. Perales, 
    878 F.2d 577
    , 580 (2d
    Cir. 1989). I disagree. To be sure, our case law has recognized three narrowly
    defined situations in which a movant cannot obtain a preliminary injunction under
    the “serious questions” formulation.        See id.; Tom Doherty Assocs., Inc. v. Saban
    Entm’t, Inc., 
    60 F.3d 27
    , 33–34 (2d Cir. 1995); Abdul Wali v. Coughlin, 
    754 F.2d 1015
    ,
    1025 (2d Cir. 1985).       But Plaza Health, on which the majority relies, is not
    applicable.
    To explain my conclusion requires a step back from our traditional
    formulation, to set forth why this Circuit was correct to reaffirm our serious
    question approach—and, indeed, why we err today in expanding a formulaic
    exception to it. While sometimes styled in our case law as its own “standard,”
    see, e.g., Otoe‐Missouria Tribe of Indians v. N.Y. State Dep’t of Fin. Servs., 
    769 F.3d 105
    ,
    110 (2d Cir. 2014), the “sufficiently serious questions, plus a balance of hardships
    40
    tipping decidedly in favor of the moving party” approach is not actually a separate
    test at all, but rather a way of articulating one point on a single sliding scale that
    balances likelihood of success against hardship in determining whether a
    preliminary injunction should issue.       See 11A Charles Alan Wright, Arthur R.
    Miller & Mary Kay Kane, Federal Practice and Procedure § 2948.3 (3d ed.) (Westlaw)
    (database updated August 2019) (hereinafter “Wright & Miller”) (referring to the
    Second Circuit’s “serious questions” formulation as “[p]robably the most often‐
    quoted statement” of the sliding scale principle). Likelihood of success, while of
    “particular importance” in this inquiry, is not determinative, but must be
    considered and balanced with the relative hardship each side is likely to face from
    the determination whether an injunction issues, with the so‐called “serious
    questions” standard emerging as simply one point on the sliding scale at which an
    injunction may be warranted.25 Id. This flexible approach is particularly well‐
    suited to the preliminary injunction context, where courts act pursuant to
    25 As Judge Frank articulated decades ago, when “the balance of hardships tips
    decidedly toward plaintiff,” it should “ordinarily be enough that the plaintiff has raised
    questions going to the merits so serious, substantial, difficult and doubtful, as to make
    them a fair ground for litigation and thus for more deliberate investigation.” Hamilton
    Watch Co. v. Benrus Watch Co., 
    206 F.2d 738
    , 740 (2d Cir. 1953).
    41
    equitable principles.26 See, e.g., Holland v. Florida, 
    560 U.S. 631
    , 649–50 (2010) (“In
    emphasizing the need for flexibility . . . we have followed a tradition in which
    courts of equity have sought to relieve hardships which, from time to time, arise
    from a hard and fast adherence to more absolute legal rules, which, if strictly
    applied, threaten the evils of archaic rigidity.” (internal quotation marks,
    alterations, and citations omitted)).
    Against this backdrop, our so‐called “exceptions” to the serious questions
    formulation are best understood not in prescriptive terms, but as the articulation
    of principles guiding the application of the sliding scale calculus in particular
    scenarios.    As relevant here, the Plaza Health “exception” thus reflects a
    considered judgment, drawing on equitable ideas, that “[w]here the moving party
    seeks to stay government action taken in the public interest pursuant to a statutory
    or regulatory scheme,” the serious questions formulation should be generally
    unavailable precisely because the balance of hardships is so unlikely to tip
    26 Indeed, confining preliminary injunctions to circumstances in which a plaintiff
    has shown there is no difficult question of law that could ultimately go against him would
    “deprive the remedy of much of its utility.” Wright & Miller § 2948.3; see also Citigroup,
    
    598 F.3d at 35
     (noting that “[p]reliminary injunctions should not be mechanically
    confined to cases that are simple or easy,” as happens when the likelihood‐of‐success
    standard is formulaically employed).
    42
    decidedly in that party’s favor. Able v. United States, 
    44 F.3d 128
    , 131 (2d Cir. 1995)
    (quoting Plaza Health, 
    878 F.2d at 580
    ). In issuing a preliminary injunction based
    on the conclusion that it does, a court impermissibly “substitute[s] its own
    determination of the public interest” for the one reflected in the statutory or
    regulatory scheme. Id. at 132.
    Accordingly, where government action has been fairly characterized as
    taken pursuant to a statutory or regulatory scheme, we have generally applied the
    likelihood‐of‐success standard. See Citigroup, 
    598 F.3d at
    35 n.4 (articulating the
    exception as limited to situations in which “a moving party seeks to stay
    government action taken in the public interest pursuant to a statutory or
    regulatory scheme”). And where movants have sought preliminarily to enjoin
    government action pursuant to a federal statutory or regulatory scheme, we have
    explained that in the context of such action, “developed through presumptively
    reasoned democratic processes” and resulting from “the full play of the
    democratic process involving both the legislative and executive branches,” it is
    difficult to envision any circumstance in which a movant could demonstrate that
    the balance of hardships tips decidedly in his favor. Able, 44 F.3d at 131.
    43
    The majority argues that the Plaza Health exception sweeps more broadly,
    relying for this proposition on cases involving action taken by state and local
    governments. 27     See Maj. Op. at 15–16.         While certain of these cases did not
    analyze why the Plaza Health exception was applicable, and appear simply to have
    assumed that the government action in question was taken pursuant to a statutory
    or regulatory scheme, see, e.g., Cent. Rabbinical Cong., 763 F.3d at 192; Monserrate,
    
    599 F.3d at 154
    , those that did engage with this analysis explicitly identified a
    statutory or regulatory scheme and accordingly concluded that the presumptive
    27 See, e.g., Cent. Rabbinical Cong. of U.S. & Canada v. N.Y.C. Dep’t of Health & Mental
    Hygiene, 
    763 F.3d 183
    , 192 (2d Cir. 2014) (likelihood‐of‐success standard applied to
    preliminary injunction sought by religious organizations against a city ordinance based
    on the court’s conclusion, without further analysis, that the ordinance constituted
    “government action taken in the public interest pursuant to a statutory or regulatory
    scheme” (citation omitted)); Monserrate v. N.Y. State Senate, 
    599 F.3d 148
    , 154 (2d Cir. 2010)
    (same, as to a preliminary injunction seeking to unwind the expulsion of a state senator);
    NAACP v. Town of East Haven, 
    70 F.3d 219
    , 223 (2d Cir. 1995) (likelihood‐of‐success
    standard applied to a preliminary injunction seeking to enjoin a town from hiring police
    officers or firefighters, based on the court’s conclusion that the town acted “in the public
    interest” and “pursuant to established municipal regulations and state civil service
    laws”); N.Y. Urban League, Inc. v. State of New York, 
    71 F.3d 1031
    , 1036 n.7 (2d Cir. 1995)
    (applying likelihood‐of‐success standard to a preliminary injunction seeking to bar
    transit authority from implementing a proposed fare increase on the basis that the action
    in question “was to be implemented in accordance with the special powers” of the transit
    authority board as set forth in a state statute); see also Molloy v. Metro. Transp. Auth., 
    94 F.3d 808
    , 811 (2d Cir. 1996) (relying on New York Urban League in applying the likelihood‐
    of‐success standard to a preliminary injunction sought against transit authority’s
    implementation of a staff reduction plan).
    44
    public interest weighed against the movant, see, e.g., NAACP, 
    70 F.3d at 223
    ; see
    also, e.g., Otoe‐Missouria Tribe of Indians, 769 F.3d at 110 (determining that New
    York’s ban on certain loans was “a paradigmatic example of governmental action
    taken in the public interest, one that vindicated proven policies implemented
    through legislation or regulations” and therefore applying the likelihood‐of‐
    success standard (internal quotation marks and citations omitted)).28
    Where, by contrast, government action has not been taken pursuant to a
    specific statutory or regulatory scheme, the narrow Plaza Health exception has not
    been applied, precisely because the public interest has not been presumed to rest
    with a single party. This explains why this Court recently upheld the denial of a
    preliminary injunction sought by President Trump to restrain the enforcement of
    a grand jury subpoena issued by the New York County District Attorney without
    applying the Plaza Health exception in determining the applicable preliminary
    injunction standard. See Trump v. Vance, 
    941 F.3d 631
    , 639–40 (2d Cir. 2019). It
    explains our decision in Haitian Centers Council, Inc. v. McNary, 
    969 F.2d 1326
     (2d
    Cir. 1993), judgment vacated as moot by Sale v. Haitian Ctrs. Council, Inc., 
    509 U.S. 918
    28  Such cases may also exhibit an especial hesitancy on the part of federal courts
    to substitute their own view of the public interest for that reached by local and state
    governments in light of principles of comity and federalism.
    45
    (1993), in which we applied the serious questions standard to an injunction sought
    against the actions of the Immigration and Naturalization Service only after
    rejecting the government’s argument that the action was taken “pursuant to
    Congress’[s] broad grant of authority in the [Immigration and Nationality Act],”
    and reasoning that “in litigation such as is presented herein, no party has an
    exclusive claim on the public interest,” id; see also, e.g., Patton v. Dole, 
    806 F.2d 24
    ,
    29–30 (2d Cir. 1986); Hudson River Sloop Clearwater, Inc. v. Dep’t of Navy, 
    836 F.2d 760
    , 763 (2d Cir. 1988); Mitchell v. Cuomo, 
    748 F.2d 804
    , 806–07 (2d Cir. 1984); cf.
    Carey v. Klutznick, 
    637 F.2d 834
    , 839 (2d Cir. 1980) (rejecting the Census Bureau’s
    argument that “the public interest [rests] solely with it”).
    The government action at issue in the instant case plainly falls outside the
    current confines of the narrow Plaza Health exception. Here, far from a situation
    in which a movant seeks to enjoin action that is the product of “the full play of the
    democratic process,” Able, 44 F.3d at 131, these legislative subpoenas, with due
    respect, do not constitute governmental action pursuant to a statutory or
    regulatory scheme and do not reflect the presumptively public‐interested actions
    of both the legislative and executive branches.        Rather, each subpoena is the
    46
    product of a sub‐component of a single chamber of one branch of the federal
    government and, critically, implicates the interests of another branch.29
    The majority’s approach, which concludes that, because the Committees act
    pursuant to powers under the Constitution, such action should “[s]urely . . . not”
    be evaluated under a “less rigorous standard” than that “applied to plaintiffs
    seeking to preliminary enjoin state and local units of government” in cases such as
    Central Rabbinical Congress and Monserrate, Maj. Op. at 20–21, is misguided for two
    reasons. First, by deeming the “serious questions” standard to be less rigorous,
    the majority ignores the fact that the ultimate burden is equivalent under both
    standards.30   More fundamentally, the majority errs by categorically extending
    29  Indeed, precisely because subpoenas of this sort implicate separation of powers
    so that neither Congress nor the Plaintiffs can be taken to represent the public interest
    with regard to their enforcement, the D.C. Circuit in Mazars declined to determine, in an
    analogous context, what deference it owed to the congressional subpoena reviewed in
    that case. Mazars, 940 F.3d at 726.
    30   As is the nature of a sliding scale, the variables move in tandem and the
    Plaintiffs’ ultimate burden is equivalent either way. The majority perceives tension
    between this Court’s observation in Citigroup that the “overall burden” of the serious
    questions standard is “no lighter than the one it bears under the ‘likelihood of success’
    standard,” Citigroup, 
    598 F.3d at 35
    , and language in our other opinions that refers to the
    likelihood‐of‐success standard as “more rigorous,” see, e.g., Cent. Rabbinical Cong., 763
    F.3d at 192. See Maj. Op. at 14 n.22. I disagree. Because one standard requires a more
    demanding showing as to the merits and a correspondingly less demanding showing as
    to hardship, while the other standard requires the reverse, the overall burdens are clearly
    equivalent. Deeming the likelihood‐of‐success standard to be “more rigorous” refers
    only to its increased rigor as to the required merits showing. It was for this reason,
    47
    the Plaza Health exception to a situation in which “no party has an exclusive claim
    on the public interest,” Time Warner Cable of N.Y.C. v. Bloomberg L.P., 
    118 F.3d 917
    ,
    923 (2d Cir. 1997) (quoting Haitian Centers, 
    969 F.2d at 1339
    ), when the so‐called
    “government action exception” is premised entirely on the assumption that the
    public interest weighs decidedly against the movant.
    To be clear, preliminary injunctions constitute an extraordinary form of
    relief and should not issue lightly. See, e.g., Mazurek v. Armstrong, 
    520 U.S. 968
    ,
    972 (1997) (quoting Wright & Miller § 2948). The majority’s expansion of our so‐
    called “government action exception” into the delicate arena of congressional
    investigations, however, is unwise, precisely because this is a context in which
    flexible application of equitable principles is vital.        Historically, federal courts
    have undertaken some of their most difficult assignments in the context of
    reviewing the actions of congressional committees. The Supreme Court has thus
    been    required     to   take    on    the        ”arduous   and   delicate   task”    of
    “[a]ccommodat[ing] . . . the congressional need for particular information with the
    among others, that we concluded in Citigroup that the Supreme Court’s decision in Winter
    revealed “no command . . . that would foreclose the application of our established ‘serious
    questions’ standard as a means of assessing a movant’s likelihood of success on the
    merits” against the other components required to obtain preliminary relief. 
    598 F.3d at 38
    .
    48
    individual and personal interest in privacy.”     Watkins, 
    354 U.S. at 198
    .   It has
    been called upon to address the “[g]rave constitutional questions” presented when
    “the power of Congress to investigate” appears to encroach on the limits on that
    power imposed by the Bill of Rights and, in particular, the First Amendment.
    Rumely, 
    345 U.S. at 44, 48
    .     Disputes between congressional committees and
    Presidents arising from subpoenas, as here, also not uncommonly require courts
    to “search for accommodation between the two branches”—a task for which this
    Circuit’s flexible approach to making the difficult judgment whether a preliminary
    injunction should issue is particularly well‐suited. United States v. Am. Tel. & Tel.
    Co (“AT&T II”), 
    567 F.2d 121
    , 131 (D.C. Cir. 1977).
    In short, we should not deprive ourselves of our traditional approach in
    such a sensitive context. As we affirmed in Citigroup, “[r]equiring in every case
    a showing that ultimate success on the merits is more likely than not is
    ‘unacceptable as a general rule,’” and also “deprive[s] the remedy of much of its
    utility.” 
    598 F.3d at
    35–36 (quoting Wright & Miller § 2948.3). Because this case
    is not squarely covered by Plaza Health or any other previously‐articulated
    “exception,” I conclude we are bound to (and should) undertake our usual
    approach: namely, to consider the Plaintiffs’ showing as to the merits, balance of
    49
    hardships (merged here with the public interest inquiry, see Nken v. Holder, 
    556 U.S. 418
    , 435 (2009)), and irreparable harm and determine whether an injunction
    is warranted under either the likelihood of success or serious questions standard.
    As set forth already, moreover, these subpoenas do, in fact, present serious
    questions implicating not only the investigative authority of these two House
    committees, but the separation of powers between Congress and the Presidency.
    *     *      *
    Having determined that Plaintiffs have raised serious questions as to the
    merits, in the usual case, the next step would be to assess the balance of hardships.
    But this leads to my final point of departure from the majority.       The majority
    orders immediate compliance with these subpoenas save for a “few documents
    that should be excluded” pursuant to its call for a restricted culling of certain
    records assembled under specific subpoena categories.         Maj. Op. at 86.     In
    contrast, I would not remand for the limited culling ordered by the majority, but
    would instead remand in full, directing that the district court assist in the
    development of the record regarding the legislative purposes, pertinence, privacy,
    and separation‐of‐powers issues at stake in this case.
    50
    I would request the district court on remand promptly to implement a
    procedure by which the Plaintiffs identify on privacy or pertinency grounds
    specific portions of the material assembled in response to these subpoenas for
    nondisclosure.      Like the majority, I would then provide counsel for the
    Committees with an opportunity to object, but I would also require counsel,
    provided with a general description of such material, to articulate clearly the
    legislative purpose that disclosure serves and to specify how the material sought
    is pertinent to that purpose. Even assuming, arguendo, that the Committees act
    pursuant to adequate authorization from the House as a whole, serious questions
    persist as to the ends the Committees are pursuing and whether these ends are
    adequate to justify the sought‐after disclosures.31 A fuller record would permit a
    more informed calculus regarding balance of hardships and would further clarify
    the stakes as to the serious questions that the Plaintiffs have already raised. This
    full remand is superior to the majority’s approach for at least three reasons.
    31As to the “case study” rationale proffered by the House Financial Services
    Committee, for instance, if that Committee is unable more clearly to articulate the
    pertinence of its subpoenas to the legislative purposes it pursues, see Watkins, 
    354 U.S. at
    214–15, the balance of hardships may well lie with the Plaintiffs, who will suffer
    irreparable harm from the disclosure of their private and business affairs.
    51
    First and most fundamentally, remand is necessary here because the present
    record does not permit a full assessment of either the serious questions raised by
    these novel subpoenas or the balance of hardships with regard to specific
    disclosures. The present record is wholly insufficient to support the conclusion
    that the voluminous material sought pursuant to these subpoenas should at this
    time be produced. Serious questions arising from the lack of historical precedent
    for these subpoenas, their questionable authorization, their legislative purposes,
    and the pertinence of particular disclosures remain. The record as to hardship,
    moreover, is sparse, and does not reflect either parties’ concerns as to the disclosure
    or nondisclosure of particular categories of information sought by these
    extraordinarily broad subpoenas.         The majority disagrees on both counts,
    concluding that while the questions here may be “serious,” they are without merit,
    Maj. Op. at 100–01, and that even if the balance of hardships tips in Plaintiffs’ favor,
    it does not do so “decidedly,” Maj. Op. at 102. For the reasons already expressed,
    however, I cannot join in this assessment.
    Next (and notably), a broader remand is necessary here, even taking the
    majority on its own terms—even assuming (incorrectly) that the district court’s
    judgment could be substantially affirmed on the present record. This is because
    52
    the majority’s remand is inadequate to address the privacy and pertinency
    concerns that the majority itself identifies and deems important. As to sensitive
    personal information and an unspecified category of “nonpertinent” material, the
    majority concludes that the Plaintiffs should be afforded an opportunity to object
    to disclosure on privacy and pertinency grounds. It notes that “[t]he Committees
    have advanced no reason why the legislative purposes they are pursuing require
    disclosure” of “payment for anyone’s medical expenses,” for instance, and the
    majority thus forbids it. Maj. Op. at 84. But by providing the Plaintiffs with an
    opportunity to object only as to limited, specific categories of information sought
    pursuant to these subpoenas, the majority creates the very potential for
    unwarranted disclosure of sensitive information that it purports to disallow. The
    majority thus orders compliance with, for instance, the Deutsche Bank subpoena’s
    demand for “any document related to any domestic or international transfer of
    funds in the amount of $10,000 or more,” including any “check,” J.A. at 38,
    providing no opportunity for Plaintiffs to object that the sought‐after material is
    sensitive and related to no legislative purpose at all.
    Perhaps there is no material responsive to this category that would trigger
    Rule 26(c)(1)’s protections against “embarrassment, oppression, or undue burden”
    53
    in a routine civil case. Fed. R. Civ. P. 26(c)(1). Perhaps such material does exist.
    We cannot know until the documents are assembled and objections are made.
    The privacy and pertinency concerns that the majority purports to address simply
    cannot be addressed in the abstract. And by declining a full remand to permit a
    record to be made, the majority affords less protection against the unwarranted
    disclosure of personal information regarding a sitting President and his family
    than would be afforded to any litigant in a civil case.
    Finally, I also disagree with the majority’s implicit assessment that the
    Plaintiffs have demonstrated no stake in the privacy of their business‐related
    information that merits further review. Indeed, to the extent that the majority
    does show a reasonable concern for the needless disclosure of Plaintiffs’ private
    and nonpertinent information, this concern does not generally extend to private
    business information at all, even though such information may implicate the same
    issues of privacy and (non)pertinence.       To be sure, the majority is correct that
    Congress must have the ability to investigate businesses (even closely‐held ones)
    in aid of legislation.      And such investigations, serving a public good, will
    sometimes cause competitive harm.32 But particularly in light of the very broad
    32   Federal Rule of Civil Procedure 26(c)(1)(G) permits a district court to issue
    54
    disclosure sought by these subpoenas (which, with regard to many transactions,
    could require the production of information from both this year and from decades
    ago), the majority has proffered no clear reason for denying the Plaintiffs an
    opportunity to object more generally to the disclosure of such material.
    The majority argues that any hardship from business disclosures is offset in
    this case by the fact that Presidents already “expose for public scrutiny a
    considerable amount of personal financial information pursuant to the financial
    disclosure requirement of the Ethics in Government Act, 5 U.S.C. app. §§ 101‐111.”
    Maj. Op. at 102. But this is beside the point—or perhaps makes the point that the
    majority’s approach is problematic.
    Public disclosures made pursuant to the Ethics in Government Act are
    required by law, pursuant to a statute that has run the gantlet of bicameralism and
    presentment. In making disclosures pursuant to this Act, a President complies
    with a statute that presumptively reflects a democratically enacted consensus
    protective orders to prevent public disclosure of “confidential . . . commercial
    information,” a protection not afforded or offered to the Plaintiffs by the Committees
    here. The majority does not include these competitive harms as “irreparable injuries”
    in its analysis, restricting its focus only to “loss of privacy.” See Maj. Op. at 101–02. The
    irreversible nature of the competitive harm risked by immediate and unconditional
    disclosure, and the lack of safeguards common to typical discovery procedures in civil
    litigation, further buttress my view that these subpoenas, as drafted, raise serious
    questions which a remand would aid in resolving.
    55
    regarding the financial disclosures that a Chief Executive should be required to
    make. These House subpoenas, by contrast, require “considerably more financial
    information,” as the majority concedes, but themselves raise substantial questions
    as to whether they are supported by “sufficient evidence of legislative
    authorization and purposes to enable meaningful judicial review.”        Maj. Op. at
    55, 102. And as Judge Katsas suggested in dissent from the denial of rehearing
    in banc in Mazars, the scope of required disclosure “is determined . . . by the whim
    of Congress—the President’s constitutional rival for political power—or even, as
    in this case, by one committee of one House of Congress.”         Mazars, 
    2019 WL 5991603
    , at *1 (Katsas, J., dissenting from the denial of rehearing en banc). In such
    circumstances, and taking the majority’s analysis on its own terms, it is not clear
    why the majority limits its remand to the particular categories of information that
    it has selected, as opposed to permitting a more general opportunity to object
    regarding nonpertinent business information and the irreparable injury that will
    attend its disclosure.
    For all the reasons that I have laid out here, this matter should be returned
    to the district court. The remand that I have outlined would clarify the issues at
    stake so that a reasoned determination could be made as to whether serious
    56
    questions persist, and where the balance of hardships lies. Indeed, given the lack
    of historical precedent for these subpoenas; their extraordinary breadth; and the
    persistent questions here regarding authorization, legislative purposes, and
    pertinence, a remand for development of the record with regard to specific
    categories of information is far preferable to the majority’s approach.
    Such a procedure would also encourage negotiation between the parties and
    potentially narrow the scope of this dispute. Because I conclude, contrary to the
    majority, that this case implicates the Supreme Court’s caution to “tread warily”
    in matters pitting the power of Congress to investigate against other substantial
    constitutional concerns, Rumely, 
    345 U.S. at 46
    , and because the “serious
    questions” delineated above sound in separation of powers, see Pub. Citizen v. Dep’t
    of Justice, 
    491 U.S. 440
    , 466 (1989) (noting that the Supreme Court’s “reluctance to
    decide constitutional issues is especially great where . . . they concern the relative
    powers of coordinate branches of government”), this matter falls within a range of
    cases in which we should attempt, if possible, to “avoid a resolution that might
    disturb the balance of power between the two branches,” AT&T II, 
    567 F.2d at 123
    .
    Perhaps that is not possible here. But as the D.C. Circuit has recognized in the
    past, congressional committees and the Chief Executive “have a long history of
    57
    settlement of disputes that seemed irreconcilable” and such resolutions, where
    possible, are to be preferred, since “[a] court decision selects a victor, and tends
    thereafter to tilt the scales.” AT&T I, 
    551 F.2d at 394
    ; see also 
    id. at 391
     (noting
    possibility of “better balance . . . in the constitutional sense” from “political
    struggle and compromise,” rather than court decision); Rumely, 
    345 U.S. at
    45–46
    (noting that a “[c]ourt’s duty to avoid a constitutional issue, if possible, applies not
    merely to legislation . . . but also to congressional action by way of resolution”—
    indeed, most especially in this context).
    Accordingly, I would withhold decision as to balance of hardships and
    remand to permit the district court and the parties the opportunity to provide this
    Court with an adequate record regarding the legislative purpose, pertinence,
    privacy and separation of powers issues in this case.        Such a procedure, as in
    AT&T I, 
    551 F.2d at
    394–95, and AT&T II, 
    567 F.2d at
    128–32, could narrow the
    scope of the present dispute. But it is required in any event, because the record
    simply does not support the majority’s decision to order immediate compliance
    with these subpoenas, but for a “few documents,” Maj. Op. at 85, falling within its
    preselected categories. To be clear, I reach this resolution guided by the Supreme
    Court’s admonition in Rumely that the outer reaches of Congress’s investigative
    58
    power are to be identified reluctantly, and only after Congress “has demonstrated
    its full awareness of what is at stake by unequivocally authorizing an inquiry of
    dubious limits.” 
    345 U.S. at 46
    .    Serious questions persist with regard to these
    subpoenas—questions demanding close review lest such novel subpoenas prove
    a threat to presidential autonomy not only now but in the future, and “to the
    detriment of not only the President and his office but also the Nation that the
    Presidency was designed to serve.” Fitzgerald, 
    457 U.S. at 753
    . Once the parties
    have provided this Court with the information that I would seek on remand, we
    would at that point have a sufficient record on which to make a prompt and
    reasoned determination as to where the balance of hardships lies and whether the
    Plaintiffs, having raised serious questions on the merits, are entitled to preliminary
    relief.
    59
    

Document Info

Docket Number: 19-1540-cv

Filed Date: 12/3/2019

Precedential Status: Precedential

Modified Date: 12/3/2019

Authorities (87)

City of Mobile v. Bolden , 100 S. Ct. 1490 ( 1980 )

the-medical-society-of-the-state-of-new-york-a-new-york-not-for-profit , 560 F.2d 535 ( 1977 )

Loving v. United States , 116 S. Ct. 1737 ( 1996 )

COMMITTEE ON JUD., US HOUSE OF REPRES. v. Miers , 558 F. Supp. 2d 53 ( 2008 )

Franchise Tax Bd. of Cal. v. Hyatt , 203 L. Ed. 2d 768 ( 2019 )

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Ferri v. Ackerman , 100 S. Ct. 402 ( 1979 )

United States v. Jones , 132 S. Ct. 945 ( 2012 )

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Freytag v. Commissioner , 111 S. Ct. 2631 ( 1991 )

Mazurek v. Armstrong , 117 S. Ct. 1865 ( 1997 )

united-states-v-american-telephone-telegraph-company-john-e-moss , 567 F.2d 121 ( 1977 )

ceres-partners-v-gel-associates-gollust-tierney-and-oliver-coniston , 918 F.2d 349 ( 1990 )

medicaremedicaid-gu-37922-plaza-health-laboratories-inc-v-cesar-a , 878 F.2d 577 ( 1989 )

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Robert Shelton v. United States , 327 F.2d 601 ( 1963 )

Winter v. Natural Resources Defense Council, Inc. , 129 S. Ct. 365 ( 2008 )

Nken v. Holder , 129 S. Ct. 1749 ( 2009 )

In Re Fitch, Inc., Appellant-Cross-Appellee, American ... , 330 F.3d 104 ( 2003 )

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