United States v. Zhong H. Chen ( 2016 )


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  •           United States Court of Appeals
    For the First Circuit
    No. 14-2003
    UNITED STATES OF AMERICA,
    Petitioner, Appellee,
    v.
    ZHONG H. CHEN,
    Respondent, Appellant.
    APPEAL FROM THE UNITED STATES DISTRICT COURT
    FOR THE DISTRICT OF MASSACHUSETTS
    [Hon. William G. Young, U.S. District Judge]
    Before
    Lynch, Circuit Judge,
    Souter,* Associate Justice,
    and Stahl, Circuit Judge.
    William J. Lovett, with whom Melissa S. Baldwin and Collora
    LLP were on brief, for appellant.
    Alexander P. Robbins, Attorney, Tax Division, Department of
    Justice, with whom Robert J. Branman, Attorney, Tax Division,
    Department of Justice, Caroline D. Ciraolo, Acting Assistant
    Attorney General, Diana L. Erbsen, Deputy Assistant Attorney
    General, Gilbert S. Rothenberg, Robert W. Metzler, Attorneys, Tax
    Division, Department of Justice, and Carmen M. Ortiz, United States
    Attorney, were on brief, for appellee.
    *    Hon. David H. Souter, Associate Justice (Ret.) of the
    Supreme Court of the United States, sitting by designation.
    February 29, 2016
    LYNCH, Circuit Judge.    Tensions between taxpayers and
    the Internal Revenue Service ("IRS") over forced disclosure of
    foreign bank account information implicate both statutory and
    constitutional rights.   Taxpayers have Fifth Amendment rights not
    to be forced to incriminate themselves by the compelled act of
    production.   But where the documents are required to be kept under
    the regulatory scheme of the Bank Secrecy Act ("BSA" or "the Act"),
    see Currency and Foreign Transactions Reporting Act, Pub. L. No.
    91-508, tit. II, 84 Stat. 1118 (1970) (codified as amended at 31
    U.S.C. § 5311 et seq.), the question arises whether the Required
    Records Doctrine under the Fifth Amendment trumps those Fifth
    Amendment rights.    The Supreme Court has not directly answered
    this question.
    We now join the unanimous view of the circuit courts
    that have faced the question, all of which hold that the taxpayer
    must comply with an IRS summons for documents he or she is required
    to keep under the Act, where the IRS is investigating civilly the
    failure to pay taxes and the matter has not been referred for
    criminal prosecution.     And so we affirm the district court's
    enforcement of the summons as to documents required to be kept
    under the BSA.   See United States v. Chen, 
    952 F. Supp. 2d 321
    ,
    333 (D. Mass. 2013).      As to enforcement of the summons for
    documents not subject to the BSA, we vacate and remand to the
    district court for further explanation.
    - 3 -
    I.
    As part of an investigation into the 2008 tax liability
    of Zhong H. Chen and his wife, Chu H. Ng, the IRS served a summons
    on Chen on September 12, 2011, requiring him to appear for an
    interview     with   an   IRS   revenue    agent   and   to   produce   various
    financial and banking records.            Chen appeared for the interview,
    but he refused to answer any questions -- invoking the Fifth
    Amendment -- and did not provide the requested documents.                On May
    31,   2012,    the   government   filed     in   the   Massachusetts    federal
    district court a petition to enforce the portion of the summons
    seeking the production of documents.             In support of its petition,
    the government submitted an affidavit executed by an IRS revenue
    agent stating that "[i]t is necessary to obtain the records sought
    by the Summons in order to determine the federal tax liabilities
    of Chu H. Ng and Zhong H. Chen for the taxable period ending
    December 31, 2008."       Importantly, it also stated that "[t]here is
    no 'Justice Department referral[]' . . . in effect with respect to
    Chu H. Ng and Zhong H. Chen for the year under examination."1                In
    1   This statement meant that the taxpayers were not then
    referred for criminal prosecution by the Department of Justice.
    "A Justice Department referral is in effect with respect to any
    person if -- (i) the Secretary has recommended to the Attorney
    General a grand jury investigation of, or the criminal prosecution
    of, such person for any offense connected with the administration
    or enforcement of the internal revenue laws, or (ii) any request
    is made under section 6103(h)(3)(B) for the disclosure of any
    return or return information (within the meaning of section
    6103(b)) relating to such person." 26 U.S.C. § 7602(d)(2)(A).
    - 4 -
    response, Chen asserted a Fifth Amendment claim of privilege, not
    over the documents themselves, but over his compelled act of
    producing the documents.             See Fisher v. United States, 
    425 U.S. 391
    ,       410    (1976)      (describing    compelled    act     of     production
    privilege); see also In re Grand Jury Subpoena (Mr. S.), 
    662 F.3d 65
    , 72–73 (1st Cir. 2011).
    The district court granted, in part, the government's
    petition to enforce the summons on July 3, 2013.                 See Chen, 952 F.
    Supp. 2d at 334.           It granted the petition "insofar as it relates
    to those documents implicated by the recordkeeping requirements of
    the Bank Secrecy Act" because it concluded that those documents
    fall within the scope of the Required Records Doctrine.                      
    Id. at 333.
          On     September    11,   2014,   after   reviewing    in     camera   the
    documents not covered by the BSA's recordkeeping provision, as
    well as an in camera argumentative submission in support of Chen's
    privilege claim, the district court issued a brief order directing
    Chen, without explanation, also to produce the documents not
    covered by the BSA.           This appeal followed.2
    II.
    Our   holding   requires    an   understanding     of    the     Bank
    Secrecy Act and its purposes.
    2  We need not address the contempt issue raised in Chen's
    original brief because that issue has since been disposed of. See
    Judgment, United States v. Chen, No. 14-2339 (1st Cir. Nov. 2,
    2015).
    - 5 -
    The BSA was first enacted in 1970.         Its preamble states
    its four purposes as follows: "to require certain reports or
    records where they have a high degree of usefulness in criminal,
    tax, or regulatory investigations or proceedings, or in the conduct
    of   intelligence   or   counterintelligence    activities,    including
    analysis, to protect against international terrorism."3         31 U.S.C.
    § 5311.   Enforcement of criminal laws is a direct purpose, but not
    the sole purpose.
    The Act requires individuals engaged in foreign banking
    to maintain certain records:
    [T]he Secretary of the Treasury shall require
    a resident or citizen of the United States or
    a person in, and doing business in, the United
    States, to keep records, file reports, or keep
    records and file reports, when the resident,
    citizen, or person makes a transaction or
    maintains a relation for any person with a
    foreign financial agency.
    
    Id. § 5314(a).
    The   Secretary    of    the    Treasury     has   promulgated
    regulations specifying reporting and recordkeeping requirements.
    The reporting requirement provides:
    Each United States person having a financial
    interest in, or signature or other authority
    over, a bank, securities, or other financial
    account in a foreign country shall report such
    3   The phrase "or in the conduct of intelligence or
    counterintelligence activities, including analysis, to protect
    against international terrorism" was added in 2001 by the USA
    PATRIOT Act, Pub. L. No. 107-56, § 358(a), 115 Stat. 272, 326
    (2001).
    - 6 -
    relationship to the Commissioner of Internal
    Revenue   for   each  year   in   which   such
    relationship exists and shall provide such
    information as shall be specified in a
    reporting form prescribed under 31 U.S.C. 5314
    to be filed by such persons.
    31 C.F.R. § 1010.350(a).   Those individuals who are subject to the
    § 1010.350 reporting requirement are also subject to recordkeeping
    requirements:
    Records of accounts required by § 1010.350 to
    be reported to the Commissioner of Internal
    Revenue shall be retained by each person
    having a financial interest in or signature or
    other authority over any such account. Such
    records shall contain [1] the name in which
    each such account is maintained, [2] the
    number or other designation of such account,
    [3] the name and address of the foreign bank
    or other person with whom such account is
    maintained, [4] the type of such account, and
    [5] the maximum value of each such account
    during the reporting period.     Such records
    shall be retained for a period of 5 years and
    shall be kept at all times available for
    inspection as authorized by law.
    
    Id. § 1010.420.
      This recordkeeping regulation is at the heart of
    this appeal.
    Congress, when it adopted the BSA, was deeply concerned
    about the proliferation of white-collar criminals using secret
    foreign bank accounts, and Congress emphasized the benefits that
    the reporting and recordkeeping requirements of the BSA would have
    for criminal investigations.   The Senate Committee on Banking and
    Currency noted that "[t]estimony before the committee and other
    evidence indicates that secret foreign bank accounts have been put
    - 7 -
    to a number of illegal purposes."        S. Rep. No. 91-1139, at 3
    (1970).   It stated that "[t]he purpose of the bill is to provide
    law enforcement authorities with greater evidence of financial
    transactions in order to reduce the incidence of white-collar
    crime."   
    Id. at 1;
    see 
    id. at 1–4,
    8–9; H.R. Rep. No. 91-975, at
    10, 12–13, 19–20 (1970), reprinted in 1970 U.S.C.C.A.N. 4394, 4395,
    4397–98, 4404.   Nonetheless, rooting out criminal activity was not
    Congress's only interest, and the justifications for the BSA's
    reporting and recordkeeping requirements extend far beyond the
    criminal context. Merely looking at the text of the statute proves
    that its purposes are diverse.      The text itself points to the
    utility of the required records in the tax, regulatory, and
    counterterrorism contexts.     See 31 U.S.C. § 5311.     And to the
    extent one looks at legislative history, it confirms this view.
    The    Supreme   Court,   in   reviewing   a   series   of
    constitutional challenges to the BSA, stated that while "concern
    for the enforcement of the criminal law was undoubtedly prominent
    in the minds of the legislators who considered the Act," "Congress
    seems to have been equally concerned with civil liability which
    might go undetected by reason of transactions of the type required
    to be recorded or reported."   California Bankers Ass'n v. Shultz,
    
    416 U.S. 21
    , 76–77 (1974).   Indeed, the Court emphasized that "the
    fact that a legislative enactment manifests a concern for the
    - 8 -
    enforcement of the criminal law does not cast any generalized pall
    of constitutional suspicion over it."         
    Id. at 77.4
    The   BSA   manifestly    has    non-criminal     purposes.    A
    properly functioning system of foreign commerce cannot operate
    without reporting and recordkeeping of the kind mandated by the
    BSA   and   its   implementing   regulations.      As   the    House   Report
    explains:
    The debilitating effects of the use of
    . . . secret institutions [in foreign
    jurisdictions] on Americans and the American
    economy are vast. It has been estimated that
    hundreds of millions in tax revenues have been
    lost.    Unwarranted and unwanted credit is
    being pumped into our markets.     There have
    been some cases of corporation directors,
    officers and employees who, through deceit and
    violation of law, enriched themselves or
    endangered the financial soundness of their
    companies    to   the   detriment   of   their
    stockholders. . . .
    One of the most damaging effects of an
    American's use of secret foreign financial
    facilities is its undermining of the fairness
    of our tax laws.    Secret foreign financial
    facilities, particularly in Switzerland, are
    available only to the wealthy. . . . [I]t is
    grossly unfair to leave the secret foreign
    bank account open as a convenient avenue of
    tax evasion.
    4   While the plaintiffs in Shultz had brought a Fifth
    Amendment self-incrimination challenge to the foreign reporting
    requirements in the BSA, the Court did not reach the merits of the
    issue and dismissed their claims as premature. See 
    Shultz, 416 U.S. at 71
    –75.
    - 9 -
    H.R. Rep. No. 91-975, at 12–13, reprinted in 1970 U.S.C.C.A.N. at
    4397–98.5
    To that end, information collected pursuant to the BSA's
    reporting and recordkeeping requirements is shared with other
    agencies, "including the Office of the Comptroller of the Currency,
    the Consumer Financial Protection Bureau, the Federal Reserve
    Board, the Federal Deposit Insurance Corporation, the National
    Credit      Union    Administration,     and     the   Office     of   Thrift
    Supervision."       United States v. Under Seal, 
    737 F.3d 330
    , 335 (4th
    Cir. 2013); see 31 U.S.C. § 5319 (requiring the Secretary of the
    Treasury     to   "make   information   in   a   report   filed   under   this
    subchapter available to an agency, including any State financial
    institutions supervisory agency, United States intelligence agency
    or self-regulatory organization registered with the Securities and
    Exchange Commission or the Commodity Futures Trading Commission,
    upon request of the head of the agency or organization"); 31 C.F.R.
    § 1010.950.
    Congress was keenly aware that it cannot "abridge or
    challenge the right of any country to follow its own banking
    5     The House Report also notes that while the reporting and
    recordkeeping requirements help "aid duly constituted authorities
    in lawful investigations," they also "facilitate the supervision
    of    financial   institutions   properly    subject   to   Federal
    supervision," and "provide for the collection of statistics
    necessary for the formulation of monetary and economic policy."
    H.R. Rep. No. 91-975, at 20, reprinted in 1970 U.S.C.C.A.N. at
    4405.
    - 10 -
    practices," and that it "cannot legitimately expect its laws to be
    given extraterritorial application when they conflict with the
    laws of another country."             S. Rep. No. 91-1139, at 3.                  Some
    diplomatic channels exist to assist the government in obtaining
    foreign bank records, such as letters rogatory or mutual legal
    assistance treaties, but in the face of foreign bank secrecy laws,
    these processes are lengthy, cumbersome, and far from foolproof.
    See   
    Shultz, 416 U.S. at 29
      (noting    that   efforts    to     obtain
    information from foreign banks are subject to "time consuming and
    ofttimes fruitless foreign legal process" (quoting H.R. Rep. No.
    91-975, at 12, reprinted in 1970 U.S.C.C.A.N. at 4397)).
    Accordingly,      "Congress       enacted    the   BSA   so     as    to
    ameliorate      the    difficulties      and    challenges      associated        with
    obtaining records by means of a foreign treaty."                In re Grand Jury
    Subpoena Dated Feb. 2, 2012, 
    908 F. Supp. 2d 348
    , 357 (E.D.N.Y.
    2012), aff'd, 
    741 F.3d 339
    (2d Cir. 2013).               It was reasonable for
    Congress, faced with these obstacles, to impose reporting and
    recordkeeping requirements on United States citizens and residents
    engaged in foreign banking.         "[T]he United States can legitimately
    require its own citizens or financial institutions to keep records
    and   file      reports   on    transactions       with     foreign    financial
    institutions and that is the approach taken by the bill."                  S. Rep.
    No. 91-1139, at 3.         The BSA's recordkeeping provision and its
    implementing regulation are "central to the legislative scheme in
    - 11 -
    that compliance with [them] furnishes the government with the
    information necessary to effective regulation."                  Varitimos v.
    United States, 
    404 F.2d 1030
    , 1032 n.4 (1st Cir. 1968) (emphasis
    added).
    III.
    There is extensive discussion elsewhere in the case law
    as to the evolution of the law of Fifth Amendment privilege and
    why    Chen's   Fifth   Amendment    claim   fails,     which    we   need    not
    articulate again.       We agree with seven of our sister circuits that
    the claim fails on the grounds that BSA records are subject to the
    Required Records Doctrine.         See United States v. Chabot, 
    793 F.3d 338
    (3d Cir.), cert. denied, 
    136 S. Ct. 559
    (2015); In re Grand
    Jury Subpoena Dated Feb. 2, 2012, 
    741 F.3d 339
    (2d Cir. 2013);
    United States v. Under Seal, 
    737 F.3d 330
    (4th Cir. 2013); In re
    Grand Jury Proceedings, No. 4-10, 
    707 F.3d 1262
    (11th Cir.), cert.
    denied, 
    134 S. Ct. 129
    (2013); In re Grand Jury Subpoena, 
    696 F.3d 428
    (5th Cir. 2012); In re Special Feb. 2011-1 Grand Jury Subpoena
    Dated Sept. 12, 2011, 
    691 F.3d 903
    (7th Cir. 2012), cert. denied,
    
    133 S. Ct. 2338
    (2013); In re Grand Jury Investigation M.H., 
    648 F.3d 1067
    (9th Cir. 2011), cert. denied, 
    133 S. Ct. 26
    (2012).
    The Required Records Doctrine prevents an individual
    from resisting, in the name of the Fifth Amendment, the production
    of    records   whose   creation    and   maintenance    is     required     as   a
    condition of voluntarily engaging in a highly regulated activity.
    - 12 -
    See Baltimore City Dep't of Soc. Servs. v. Bouknight, 
    493 U.S. 549
    , 556 (1990); see also In re Special Feb. 2011-1 Grand Jury
    Subpoena Dated Sept. 12, 
    2011, 691 F.3d at 908
    –09.          In a nutshell,
    it is commonly accepted that courts should apply the following
    three-part    test    for   determining   whether   the   Required   Records
    Doctrine applies to a particular recordkeeping scheme.           "[F]irst,
    the purposes of the United States' inquiry must be essentially
    regulatory[.]"6      Grosso v. United States, 
    390 U.S. 62
    , 67–68 (1968)
    (citing Shapiro v. United States, 
    335 U.S. 1
    (1948)).           "[S]econd,
    information is to be obtained by requiring the preservation of
    records of a kind which the regulated party has customarily
    kept[.]"     
    Id. at 68.
        "[T]hird, the records themselves must have
    assumed 'public aspects' which render them at least analogous to
    public documents."      Id.; see Marchetti v. United States, 
    390 U.S. 39
    , 56–57 (1968).7
    6    We agree with the United States that it mischaracterizes
    the inquiry to say it is a matter of ascertaining the hypothetical
    subjective "intent" of Congress.    Instead, the focus is on the
    nature of the underlying activity. See Grosso v. United States,
    
    390 U.S. 62
    , 68 (1968).
    7    Chen questions whether this test is relevant to an act-
    of-production privilege claim, noting that the Required Records
    Doctrine was developed before the Supreme Court recognized the
    act-of-production privilege in 
    Fisher, 425 U.S. at 410
    .       This
    argument is foreclosed by Supreme Court precedent. In 1990, well
    after both lines of doctrine had been developed, the Supreme Court
    applied the Required Records Doctrine to an act-of-production
    privilege claim asserted by a mother, acting as custodian of her
    child pursuant to court order, who was resisting an order of a
    juvenile court to produce the child. 
    Bouknight, 493 U.S. at 551
    ,
    - 13 -
    The government presents the analysis as occurring within
    two distinct analytical steps.                First, the initial question is
    whether the government is authorized to regulate the activity in
    question, as the doctrine was originally articulated by the Supreme
    Court in Shapiro.         There is no doubt that is true here.               See U.S.
    Const. art. 1, § 8, cl. 3 (granting Congress power "[t]o regulate
    commerce with foreign nations"); 
    Shultz, 416 U.S. at 59
    .                          But
    second, the government recognizes that the Court later narrowed
    the doctrine in three criminal cases, where the government was
    targeting activity that is criminal or almost always criminal.
    See Haynes v. United States, 
    390 U.S. 85
    , 95–100 (1968); 
    Grosso, 390 U.S. at 64
    –69;    
    Marchetti, 390 U.S. at 55
    –57.       Chen
    unsuccessfully tries to fit himself into the limitations set by
    those cases.       The government correctly does not contend that just
    because it has the power to regulate in an area that it also has
    the   power       to    compel    disclosure     of   required      records.       It
    acknowledges that it is not taking the position that it can simply
    criminalize an act and require records to be kept, which would
    indicate performance or non-performance of that criminal act, and
    that the records would then be admissible over a Fifth Amendment
    objection. The government also agrees that it could not by statute
    regulate     an    activity      that   is   essentially     or    almost    entirely
    554–61.
    - 14 -
    criminal, mandate recordkeeping conditions on the activity, tell
    the criminal to self-report, and then prosecute him for failing to
    do so.   Neither situation is occurring here.
    By contrast, Chen's keeping an offshore bank account is
    not inherently criminal.                 The focus of the Required Records
    Doctrine is on "the characteristics of the activities about which
    information is sought" and "the composition of the group to which
    the inquiries are made." 
    Grosso, 390 U.S. at 68
    . Offshore banking
    clearly has inherently civil aspects, and one can comply with the
    Act's recordkeeping requirement without being a criminal. In fact,
    the Act covers a great many people who are not engaged in any
    criminal activity.             Simply put, the Act cannot fairly be viewed as
    a backdoor attempt to get at a selected group engaged in illegal
    activities, through recordkeeping requirements and disclosure, for
    criminal prosecution.              Compare 
    Haynes, 390 U.S. at 95
    –97, with
    
    Varitimos, 404 F.2d at 1033
    –34.
    To    be    sure,    Congress    contemplated       that     the   records
    required to be kept under the BSA would be useful in criminal
    prosecutions.        Any fair reading of the legislative history reveals
    as   much.         But    "[w]hile      Congress   clearly    intended      the   Act's
    disclosure requirements to be of some use in criminal proceedings,
    we   regard    [the]          non-prosecutorial       interests     as   substantial."
    United   States          v.   Dichne,    
    612 F.2d 632
    ,   640    (2d   Cir.   1979)
    (upholding, over a Fifth Amendment challenge, a requirement under
    - 15 -
    the BSA that individuals "report[] . . . the transportation of
    over $5,000 in monetary instruments into or out of the United
    States," 
    id. at 639;
    see 31 U.S.C. § 5316 (previously codified at
    31 U.S.C. § 1101) (now applicable to transportation of over $10,000
    in monetary instruments)).
    Chen maintains, however, that despite the Act's civil
    applications, compliance with its recordkeeping provision has
    "criminal implications."     That may be so for some people covered
    by the Act, but "criminal implications" are not enough to render
    the Required Records Doctrine inapplicable.       As Chief Justice
    Burger, writing for the plurality in California v. Byers, 
    402 U.S. 424
    (1971), explained:
    An organized society imposes many burdens
    on its constituents. It commands the filing
    of tax returns for income; it requires
    producers and distributors of consumer goods
    to   file   informational   reports   on   the
    manufacturing process and the content of
    products, on the wages, hours, and working
    conditions of employees. . . . Comparable
    examples are legion.
    In each of these situations there is some
    possibility of prosecution -- often a very
    real one -- for criminal offenses disclosed by
    or deriving from the information that the law
    compels a person to supply. . . . But under
    our    holdings   the   mere   possibility   of
    incrimination is insufficient to defeat the
    strong policies in favor of a disclosure
    called for by statutes like the one challenged
    here.
    
    Id. at 427–28
    (plurality opinion) (footnote omitted).
    - 16 -
    This is not unusual.     In fact, courts have relied on the
    Required Records Doctrine to uphold recordkeeping schemes imposed
    in a variety of contexts where disclosure carries a very real
    chance of "criminal implications."        One prime example is in the
    securities regulation context.      See SEC v. Fehn, 
    97 F.3d 1276
    ,
    1291–93 (9th Cir. 1996) (noting that "[a]lthough disclosure might
    have revealed past criminal violations in this case, the disclosure
    requirement   does   not,   in    general,   mandate   revelation   of
    'inherently illegal activity,'" 
    id. at 1293
    (quoting 
    Bouknight, 493 U.S. at 557
    )); United States v. Stirling, 
    571 F.2d 708
    , 727–
    28 (2d Cir. 1978) (rejecting a similar Fifth Amendment self-
    incrimination claim against a securities disclosure requirement).
    Other areas include the shipment and sale of firearms,
    see United States v. Flores, 
    753 F.2d 1499
    , 1500–04 (9th Cir. 1985)
    (en banc); United States v. Resnick, 
    488 F.2d 1165
    , 1168 (5th Cir.
    1974) (noting that "the challenged laws sub judice [were] not
    directed at a highly selective group inherently suspect of criminal
    acts"); 
    Varitimos, 404 F.2d at 1033
    –34; the transportation of
    articles into the United States, see United States v. Rios-
    Gonzalez, 
    450 F.2d 1213
    , 1216–17 (2d Cir. 1971) (noting that "the
    requirement that all articles be declared and the necessity of
    such a declaration shows that the appellant, and those in a similar
    position, were not singled out as a select group 'inherently
    suspect of criminal activities,'" 
    id. at 1217
    (quoting Albertson
    - 17 -
    v. Subversive Activities Control Bd., 
    382 U.S. 70
    , 79 (1965)));
    and the distillation and possession of alcohol, see Henderson v.
    Blackwell, 
    436 F.2d 1081
    , 1082 (5th Cir. 1971) (per curiam) (citing
    Brown v. United States, 
    401 F.2d 769
    (5th Cir. 1968) (per curiam)).
    In light of the limits that the government admits exist
    on the reach of the Required Records Doctrine, we find under the
    circumstances that the documents Chen was required to maintain by
    the BSA's recordkeeping requirements are properly subject to the
    Required Records Doctrine, and that Chen cannot assert a Fifth
    Amendment claim of privilege to resist their production.
    IV.
    Of course, obtaining enforcement of a summons starts
    with the government bearing the burden of making a prima facie
    showing as required by United States v. Powell, 
    379 U.S. 48
    , 57–
    58 (1964).8   "The IRS need only make a 'minimal' showing.                  An
    affidavit of the investigating agent that the Powell requirements
    are   satisfied   is   sufficient    to    make   the   prima   facie   case."
    Sugarloaf Funding, LLC v. U.S. Dep't of the Treasury, 
    584 F.3d 8
      To obtain enforcement of a summons, "[t]he IRS must first
    make a prima facie showing '[1] that the investigation will be
    conducted pursuant to a legitimate purpose, [2] that the inquiry
    may be relevant to the purpose, [3] that the information sought is
    not already within the Commissioner's possession, and [4] that the
    administrative steps required by the Code have been followed.'"
    Sugarloaf Funding, LLC v. U.S. Dep't of the Treasury, 
    584 F.3d 340
    , 345 (1st Cir. 2009) (alterations in original) (quoting 
    Powell, 379 U.S. at 57
    –58).
    - 18 -
    340, 345 (1st Cir. 2009) (citation omitted).      Additionally, the
    IRS may not issue a summons "with respect to any person if a
    Justice Department referral is in effect with respect to such
    person."   26 U.S.C. § 7602(d)(1).     The government here submitted
    an affidavit executed by the IRS revenue agent stating that the
    summons was issued for the purpose of determining the 2008 tax
    liability of Chen and Ng, and that the IRS had not referred Chen
    or Ng to the Department of Justice for criminal prosecution.     The
    agent acknowledged that the government had some documents pointing
    to the existence of Chen's foreign bank accounts, but not enough
    documents to know whether there was underpayment of taxes.
    We reject Chen's argument that the government has not
    proven that he is in possession of offshore banking records, or
    that he even engages in offshore banking.        At this stage, the
    government does not have to prove that Chen was in possession of
    documents subject to the BSA's recordkeeping requirements.    Cf. In
    re Grand Jury Investigation 
    M.H., 648 F.3d at 1071
    .     The IRS need
    not "prove by positive evidence the existence of the records and
    their possession by the summonee."   United States v. Lawn Builders
    of New Eng., Inc., 
    856 F.2d 388
    , 392 (1st Cir. 1988) (per curiam).
    Chen makes no serious argument that there are no such documents in
    his possession or that the government otherwise has access to the
    missing documents.   Chen must produce the documents.
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    V.
    We also reject Chen's argument that "if the Court upholds
    the District Court's order compelling Chen to produce the records,"
    we   should    impose   "a    use    restriction      on    the   testimonial
    communications inherent in the act of producing the records."
    First, Chen did not request a use restriction in the
    district court, and so the request is waived for this proceeding.
    Second, the issue is hypothetical.           We have no way of knowing if
    the records will even be put to prosecutorial use.                  The D.C.
    Circuit dealt with a similar issue in Office of Thrift Supervision,
    Department of the Treasury v. Dobbs, 
    931 F.2d 956
    (D.C. Cir. 1991).
    There, the Office of Thrift Supervision ("OTS") had issued a
    subpoena duces tecum against Dobbs, requiring him to produce
    certain documents and appear for a deposition.             
    Id. at 957.
      Dobbs
    challenged the subpoena, but the district court granted the OTS's
    petition to enforce it.         
    Id. Dobbs then
    complied with the
    subpoena.     
    Id. On appeal,
    Dobbs argued that "[e]ven though he
    [had] provided testimony to OTS, . . . [the] Court could grant
    relief from the subpoena by sealing the deposition record against
    future use."    
    Id. at 958.
        The D.C. Circuit rejected his request
    because "Dobbs [was] seeking [the] Court's protection from future
    OTS action that may never occur."          
    Id. The court
    cited "the well-
    established rule that questions of suppression should not be
    considered until the time when the Government seeks to use that
    - 20 -
    evidence."     
    Id. (quoting United
    States v. Kis, 
    658 F.2d 526
    , 533
    (7th Cir. 1981)).      The same reasoning applies here.
    VI.
    Chen also appeals the district court's denial of his
    claim of privilege over his act of producing personal and corporate
    domestic   financial    records.     The    district   court   provided   no
    explanation for why it denied Chen's claim or how it analyzed the
    claim.     In its original order, the district court found that
    "Chen's Fifth Amendment privilege [was] engaged," and so it ordered
    "in camera review of the summonsed documents which do not fall
    within the scope of the recordkeeping requirements of the Bank
    Secrecy Act in order to determine, on a document-by-document basis,
    whether Chen's assertion of his Fifth Amendment privilege is made
    out."    
    Chen, 952 F. Supp. 2d at 334
    .        But after it reviewed the
    documents that Chen provided, the district court only issued a
    brief order stating: "The Court having carefully reviewed the
    documents submitted in camera and revisited the arguments and
    briefs heretofore filed, it concludes that there is no occasion to
    reconsider any of its prior orders.           The IRS summons shall be
    enforced in accordance with its terms."
    We have noted before that district courts "should take
    reasonable steps to ensure that the parties and the appellate
    courts will be able to glimpse the foundation on which their
    rulings rest," and that in some cases, "such statements are a
    - 21 -
    necessary precondition to intelligent appellate review."       Grossman
    v. Berman, 
    241 F.3d 65
    , 68 (1st Cir. 2001).       When "faced with the
    task of reviewing an inscrutable order," we may either "remand for
    a fuller exposition or act, without remanding, if a reasonable
    basis supporting the order is made manifest on the record." United
    States v. Podolsky, 
    158 F.3d 12
    , 16 (1st Cir. 1998); see Bielunas
    v. F/V Misty Dawn, Inc., 
    621 F.3d 72
    , 77–78 (1st Cir. 2010).         Here,
    we vacate and remand to the district court for an explanation of
    its ruling.   If Chen wishes to challenge that order, he should
    file a new appeal.
    VII.
    We affirm the district court's order compelling Chen's
    production of those documents required to be kept under the Bank
    Secrecy Act. As to the district court's enforcement of the summons
    for documents not subject to the BSA, we vacate and remand to the
    district   court   for   further   proceedings   consistent   with   this
    opinion.   No costs are awarded.
    - 22 -