Otto Candies, LLC v. Citigroup, Inc. ( 2020 )


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  •                Case: 18-12663      Date Filed: 07/01/2020      Page: 1 of 46
    [PUBLISH]
    IN THE UNITED STATES COURT OF APPEALS
    FOR THE ELEVENTH CIRCUIT
    ________________________
    No. 18-12663
    ________________________
    D.C. Docket No. 1:16-cv-20725-DPG
    OTTO CANDIES, LLC, et al.,
    Plaintiffs - Appellants,
    versus
    CITIGROUP, INC.,
    Defendant - Appellee.
    ________________________
    Appeal from the United States District Court
    for the Southern District of Florida
    ________________________
    (July 1, 2020)
    Before JORDAN and NEWSOM, Circuit Judges, and HALL,∗ District Judge.
    JORDAN, Circuit Judge:
    ∗Honorable James Randal Hall, Chief United States District Judge for the Southern District of
    Georgia, sitting by designation.
    Case: 18-12663     Date Filed: 07/01/2020    Page: 2 of 46
    Two American plaintiffs. Thirty-seven foreign plaintiffs. One American
    defendant. A fraudulent scheme allegedly taking place here and in Mexico, with the
    American defendant allegedly engaging in fraudulent activity in the United States.
    Assumptions, but no evidence, about where the key documents and witnesses are
    located.
    The district court, faced with this paradigm, granted the American defendant’s
    motion to dismiss for forum non conveniens. After reviewing the record, and with
    the benefit of oral argument, we reverse and remand for further proceedings. First,
    the district court mistakenly gave only “reduced” deference to the American
    plaintiffs’ choice of forum. Second, the American defendant—which had the burden
    of persuasion—did not support its claims that most of the relevant documents and
    witnesses are located in Mexico.
    I
    In reviewing a motion to dismiss for forum non conveniens, we accept as true
    the factual allegations in the complaint to the extent they are uncontroverted by
    affidavits or other evidence, or have not been challenged in the context of an
    evidentiary hearing. We also draw all reasonable inferences in favor of the plaintiffs.
    See Delong Equip. Co. v. Washington Mills Abrasive Co., 
    840 F.2d 843
    , 845 (11th
    Cir. 1988) (reviewing Rule 12(b) motions to dismiss for ineffective service of
    process, lack of personal jurisdiction, and improper venue). See also Shi v. New
    2
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    Mighty U.S. Tr., 
    918 F.3d 944
    , 948 (D.C. Cir. 2019) (accepting the plaintiffs’
    allegations of facts as true on a motion to dismiss for forum non conveniens); Aguas
    Lenders Recovery Grp. v. Suez, S.A., 
    585 F.3d 696
    , 697 (2d Cir. 2009) (explaining
    that, on appeal from a forum non conveniens dismissal without a factual hearing, the
    court accepts the plaintiff’s facts as true). The following facts are taken from the
    plaintiffs’ amended complaint and have not been contested by affidavits or other
    evidence. We set them out in detail because of their importance.
    A
    Oceanografía S.A. de C.V., a now-bankrupt Mexican company, provided oil
    drilling services to Petròleos Mexicanos S.A. (“Pemex” for short), Mexico’s state-
    owned oil and gas company. Grupo Financiero Banamex S.A. de C.V. (the
    “Banamex Group”) is a wholly owned subsidiary of Citigroup and has its principal
    place of business in Mexico. Banco Nacional de México, S.A. (“Banamex” for
    short), also based in Mexico, is a wholly owned subsidiary of the Banamex Group.
    Banamex is therefore an indirect subsidiary of Citigroup.
    In 2008, Citigroup established credit facilities within Banamex to provide
    cash advances to Oceanografía and fund its operations with Pemex. A division of
    Citigroup based in New York, called the Institutional Clients Group, was responsible
    for developing and overseeing the credit facilities, and Citigroup supervised the
    entire arrangement. In exchange for the cash advances, Citigroup charged
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    Oceanografía a high interest rate and obtained the right to collect repayment directly
    from Pemex. Because Pemex is state-owned (and perhaps unlikely to default),
    Citigroup’s credit facility was profitable and low risk. Citigroup increased its cash
    advances on several occasions, bloating Oceanografía with debt up to half of its
    annual net revenues and far exceeding the value of the underlying Pemex contracts.
    Citigroup was aware that Oceanografía was overleveraged because
    Oceanografía sent audited financial statements and documents detailing its
    operational and financial condition.     For each increase of the credit facility,
    Citigroup prepared a memorandum based on credit application forms that
    Oceanografía provided. The forms included work estimates for the Pemex contracts,
    as well as Pemex’s signed authorizations, and were supposed to be subject to
    Citigroup’s internal review procedures. Citigroup did not perform the review
    procedures, however, and granted advances knowing they were based on
    authorization documents with forged Pemex signatures.
    Citigroup saved Oceanografía’s credit forms to its internal network. Because
    Citigroup and Oceanografía communicated directly through Citigroup’s servers in
    the United States, the falsified Pemex documents and related communications are
    also located in the United States and are in Citigroup’s possession. Several Citigroup
    employees who oversaw the program and approved the cash advances are (or were)
    located in Miami and New York.
    4
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    Citigroup knew about Oceanografía’s unstable financial condition not only
    through the cash advance program, but also because it became intimately involved
    in other aspects of Oceanografía’s business. Citigroup acted as the trustee and
    paying agent on Oceanografía’s 2008 bond issuance, advised Oceanografía on plans
    to acquire assets, represented the company in pursuing investors, and supervised the
    creation of payment trusts for the benefit of its trade creditors.
    In 2014, the Mexican government discovered that Oceanografía had failed to
    provide insurance policies for its Pemex contracts and banned it from executing new
    contracts with Pemex. The government then learned of the cash advance scheme
    and investigated further. Mexican banking regulators found that ten Citigroup
    employees had violated Mexican criminal laws, and Mexican authorities pursued
    charges against Citigroup employees for causing Banamex to violate banking laws.
    The scandal began to unfold in Mexico but reverberated in the United States.
    It prompted Citigroup to conduct an internal review of its cash advance program,
    and Samuel Libnic, based in Miami as Citigroup’s head of legal matters for Latin
    America, led the project with support from at least one other Miami-based employee.
    Citigroup publicly admitted that some its employees had been criminally involved
    in the fraudulent scheme and announced that it had terminated employees both
    “inside and outside” of Mexico.
    5
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    The scandal also led the SEC and the Justice Department to open domestic
    investigations into Citigroup. Citigroup disclosed these investigations in its SEC
    annual report, stating that they had “included requests for documents and witness
    testimony.” Several plaintiffs have now filed civil actions in the United States
    related to the fraudulent scheme.
    B
    In this case, thirty-nine plaintiffs—two American and thirty-seven foreign—
    sued Citigroup (and only Citigroup) in federal court. They claim that the fraudulent
    cash advances lured them into investing in or contracting with Oceanografía and that
    “Citigroup and/or Oceanografía” knowingly misrepresented Oceanografía’s
    financial stability. They assert substantive and conspiracy claims under the RICO
    Act, 
    18 U.S.C. §§ 1962
    (c)–(d), as well as state-law claims for fraud, aiding and
    abetting fraud, conspiring to commit fraud, and breach of fiduciary duty. The
    plaintiffs allege that some of the misrepresentations were made during meetings in
    the United States, on telephone calls to and from the United States, in emails located
    on servers in the United States, and in written materials reviewed, revised, or
    approved by Citigroup personnel in the United States.
    Some of the plaintiffs are shipping companies which leased vessels to
    Oceanografía.    They allege that Citigroup’s fraudulent misrepresentations and
    omissions induced them to transact with Oceanografía while it was financially
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    unstable, causing them to lose substantial amounts of money on their leases. One of
    those shipping lessors, Otto Candies, LLC, is a citizen of the United States and
    alleges that it received fraudulent communications in Louisiana.
    Another group of plaintiffs comprises Oceanografía bondholders. They claim
    that Citigroup’s fraudulent misrepresentations and omissions induced them to
    purchase Oceanografía bonds issued in the United States on which Oceanografía
    eventually defaulted. One of those bondholders, Waypoint Asset Management LLC,
    is an investment company based in the United States. It acquired bonds in part based
    on allegedly fraudulent communications made in New York.
    Citigroup moved to dismiss the original complaint for forum non conveniens
    or, in the alternative, under Rules 9(b) and 12(b)(6) of the Federal Rules of Civil
    Procedure. In response, the plaintiffs moved for limited discovery concerning
    factual allegations that Citigroup had made in its motion—namely, that all of the
    witnesses and evidence germane to the claims are located in Mexico, that the cash
    advance contracts were negotiated and executed in Mexico, and that none of the
    alleged misconduct took place in the United States. The plaintiffs argued that
    Citigroup’s assertions contradicted or misrepresented the allegations in the
    complaint or were not supported by evidence. Citigroup opposed discovery, arguing
    that its grounds for forum non conveniens dismissal were based entirely on
    information in the complaint. The district court denied the plaintiffs’ motion,
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    concluding that the plaintiffs failed to establish good cause for discovery and that
    their requests were overbroad.
    The plaintiffs then filed an amended complaint, and Citigroup again moved to
    dismiss on the same grounds. The district court heard argument and granted
    Citigroup’s motion to dismiss for forum non conveniens.
    II
    Forum non conveniens, a common law doctrine, provides that a district court
    has inherent power to decline to hear a case in which there is proper jurisdiction and
    venue. See Gulf Oil Corp. v. Gilbert, 
    330 U.S. 501
    , 507 (1947). It is a flexible tool,
    used to prevent litigation that would “establish oppressiveness and vexation to a
    defendant out of all proportion to [the] plaintiff’s convenience” or that is unsuitable
    for the domestic forum because of “the court’s own administrative and legal
    problems.” Piper Aircraft Co. v. Reyno, 
    454 U.S. 235
    , 241 (1981) (quoting Koster
    v. Lumbermens Mut. Cas. Co., 
    330 U.S. 518
    , 524 (1947)) (alterations omitted).
    Because the plaintiff’s forum choice “should rarely be disturbed,” Gulf Oil,
    
    330 U.S. at 508
    , a forum non conveniens dismissal is subject to three conditions.
    First, as a threshold matter, a court should not dismiss an action for forum non
    conveniens unless there is an adequate and available alternative forum. See Leon v.
    Millon Air, Inc., 
    251 F.3d 1305
    , 1310–11 (11th Cir. 2001). Second, the balance of
    the relative private and public interests must weigh in favor of dismissal to justify
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    invocation of the doctrine. See 
    id.
     Private interests include the parties’ relative ease
    of access to sources of proof, access to witnesses, ability to compel testimony, the
    possibility of viewing the premises, and the enforceability of a judgment. See Gulf
    Oil, 
    330 U.S. at 508
    . Public interests include a sovereign’s interests in deciding the
    dispute, the administrative burdens posed by trial, and the need to apply foreign law.
    See 
    id.
     at 508–09. Third, the plaintiffs must be able to reinstate their suit in the
    alternative forum without undue inconvenience or delay. See Leon, 251 F.3d at
    1310–11. “A defendant has the burden of persuasion as to all elements of a forum
    non conveniens motion[.]” Id. at 1311.1
    With respect to the private interests, courts begin with the presumption that a
    domestic plaintiff has chosen a sufficiently convenient forum, and it is therefore
    incumbent upon the defendant “to prove vexation and oppressiveness that are out of
    all proportion to the plaintiff’s convenience.” Id. at 1314 (internal quotation marks
    and citation omitted). A defendant invoking forum non conveniens with respect to
    a domestic plaintiff therefore “bears a heavy burden in opposing the plaintiff’s
    chosen forum.” Sinochem Int’l Co. Ltd. v. Malaysia Int’l Shipping Corp., 
    549 U.S. 422
    , 430 (2007). The defendant must offer “positive evidence of unusually extreme
    1
    The district court concluded that Mexico was an adequate and available alternative forum,
    and that the plaintiffs would not be subject to undue inconvenience or delay if they had to refile
    there. The plaintiffs do not challenge these conclusions on appeal, so we do not address them
    further.
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    circumstances,” and the district court must be “thoroughly convinced that material
    injustice is manifest before exercising any such discretion as may exist to deny a
    United States citizen access to the courts of this country.” SME Racks, Inc. v.
    Sistemas Mecánicos Para Electrónica, 
    382 F.3d 1097
    , 1101 (11th Cir. 2004)
    (quoting Burt v. Isthmus Dev. Co., 
    218 F.2d 353
    , 357 (5th Cir. 1955)).
    Foreign plaintiffs are also entitled to a presumption in favor of their forum
    choice, albeit a presumption that “applies with less force.” Sinochem Int’l, 
    549 U.S. at 430
     (quoting Piper Aircraft, 454 U.S. at 255–56). Reduced deference is “not an
    invitation to accord a foreign plaintiff’s selection of an American forum no deference
    since dismissal for forum non conveniens is the exception rather than the rule.”
    Lacey v. Cessna Aircraft Co., 
    862 F.2d 38
    , 45–46 (3d Cir. 1988) (citation omitted).
    Accord R. Maganlal & Co. v. M.G. Chem. Co., 
    942 F.2d 164
    , 168 (2d Cir. 1991). 2
    We review a forum non conveniens dismissal for abuse of discretion,
    recognizing that a district court has wide latitude to assess the relevant private and
    public interest factors. See Piper Aircraft, 454 U.S. at 257. We may reverse when
    the district court makes a clear error of judgment or applies the wrong legal standard,
    2
    The initial presumption is an important mooring for an otherwise flexible doctrine. See
    Simon v. Republic of Hungary, 
    911 F.3d 1172
    , 1182 (D.C. Cir. 2018) (“The forum non conveniens
    doctrine comes with ground rules. The starting point is a strong presumption in favor of the
    plaintiff’s choice of the forum in which to press her suit.”); 14D Charles Alan Wright, Arthur R.
    Miller, Edward H. Cooper, & Richard D. Freer, Federal Practice and Procedure § 3828 (4th ed.
    2013) (“Without knowing the level of deference to accord the plaintiff’s choice of forum, it is not
    clear how one would assess whether the Gulf Oil factors outweigh the plaintiff’s choice.”) (italics
    added).
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    such as an incorrect presumption regarding the plaintiff’s forum choice. See SME
    Racks, 
    382 F.3d at 1102
     (reversing forum non conveniens dismissal because the
    district court “failed to articulate the relevant standards and failed to apply any
    presumption in its analysis”).
    III
    Before assessing the private and public interest factors in this case, the district
    court acknowledged that the two American plaintiffs ordinarily would be entitled to
    a strong presumption in favor of their forum choice, whereas the remaining thirty-
    seven foreign plaintiffs would not be entitled to the same level of deference. But
    because all the plaintiffs had decided to invest in Oceanografía, a Mexican company
    doing business in Mexico, the district court determined that the plaintiffs could not
    “feign surprise at potentially having to litigate a resulting dispute in Mexico.” It
    therefore applied only a “reduced” deference to the two domestic plaintiffs’ forum
    choice, just as it did for the foreign plaintiffs. This, we conclude, was incorrect.
    A
    The deference owed to the forum choice of domestic plaintiffs cannot be
    reduced solely because they chose to invest in a foreign entity and may have
    expected to litigate abroad on certain matters. Neither the Supreme Court nor the
    Eleventh Circuit has adopted a “foreign investment” standard, and such a rule would
    be in tension with existing precedent. After all, “the central purpose of any forum
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    non conveniens inquiry is to ensure that the trial is convenient[.]” Piper Aircraft,
    454 U.S. at 256. See also King v. Cessna Aircraft Co., 
    562 F.3d 1374
    , 1383 (11th
    Cir. 2009) (“[T]he appropriate inquiry is indeed convenience.”).
    A court begins with the reasonable assumption that “[w]hen the plaintiff has
    chosen the home forum . . . this choice is convenient.” Piper Aircraft, 454 U.S. at
    255–56. That a plaintiff invested in a foreign entity or country does not mean that
    the chosen domestic forum will be inconvenient, or even that it should be presumed
    to be inconvenient. It is possible that the most significant events giving rise to the
    plaintiff’s claims took place in the United States or that most of the relevant
    documents or witnesses would be located here, even though foreign investment is
    involved. See 14D Charles Alan Wright, Arthur R. Miller, Edward H. Cooper, &
    Richard D. Freer, Federal Practice and Procedure § 3828 (4th ed. 2013) (“In some
    instances, controversies that at first blush appear to be foreign actually have a
    meaningful connection with the United States or its domestic policies because there
    have been relevant transnational contacts.”). In short, investment in a foreign entity
    or country alone is not enough to dilute the threshold presumption that an American
    citizen has chosen the most convenient forum. And—except where there is a valid
    forum-selection clause, see Atl. Marine Constr. Co. v. U.S. Dist. Court, 
    571 U.S. 49
    ,
    63 (2013)—the plaintiff’s reasonable expectations are beside the point.
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    We acknowledge that at least one case supports the proposition which the
    district court applied and which Citigroup now urges us to adopt. In EIG Energy
    Fund XIV, L.P. v. Petróleo Brasileiro S.A., 
    246 F. Supp. 3d 52
    , 78 (D.D.C. 2017),
    the district court discounted the presumption in favor of the forum choice of
    domestic plaintiffs because their decision to invest abroad “put them on notice that
    they might be required to litigate disputes in a foreign forum,” such that litigation
    abroad was “reasonably foreseeable.” Nevertheless, the court ultimately denied the
    defendants’ motion to dismiss for forum non conveniens. See id. at 83.
    In our view, the district court in EIG misread prior cases in deducing a broad
    rule that “plaintiffs involved in disputes arising from international commerce receive
    less choice-of-forum deference than plaintiffs engaging in domestic transactions.”
    Id. at 78 (citing DTEX, LLC v. BBVA Bancomer, S.A., 
    508 F.3d 785
    , 795 (5th Cir.
    2007), Intec USA, LLC v Engle, 
    467 F.3d 1038
    , 1040 (7th Cir. 2006), and Guidi v.
    Inter–Continental Hotels Corp., 
    224 F.3d 142
    , 147 (2d Cir. 2000)). Of the cases
    relied on by the district court in EIG, the Fifth Circuit’s decision in DTEX is the only
    one arguably on point, and even that case did not reduce the deference given to the
    domestic plaintiff’s forum choice solely because of foreign investment.3
    3
    The two other cases cited in EIG are not on point. The Second Circuit in Guidi reversed a
    forum non conveniens dismissal in part because the “failure to grant [the plaintiff’s] choice of an
    American forum significant deference was unsound.” 
    224 F.3d at 146
    . The Seventh Circuit in
    Intec USA offered some thoughts about forum non conveniens and expressed “doubt” that the
    threshold deference “has controlling force in litigation among firms all of which trade worldwide,”
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    In DTEX, the operative fact was not that the plaintiff did business with a
    foreign entity, but that it sued for an “injury occurring in a foreign country” and that
    the “alleged torts all occurred in Mexico.” 
    508 F.3d at 795, 802
    . This is an important
    distinction, and one that appears in other international commerce cases.
    For example, in Sussman v. Bank of Israel, 
    801 F. Supp. 1068
     (S.D.N.Y.
    1992), aff’d, 
    990 F.2d 71
     (2d Cir. 1993), the district court explained that “[w]here
    an American plaintiff chooses to invest in a foreign country and then complains of
    fraudulent acts occurring primarily in that country, the plaintiff’s ability to rely
    upon citizenship as a talisman against forum non conveniens dismissal is
    diminished.” Id. at 1073 (emphasis added). In that case, the plaintiffs invested in
    an Israeli financial institution, alleged that they were defrauded “in Jerusalem” by
    the Israeli defendants, and “[a]ccording to [the] plaintiffs’ theory, it was in Israel
    that the defendants hatched their illegal scheme,” notwithstanding some “peripheral”
    activities in the United States. See id. at 1071, 1074. Given these allegations, the
    plaintiffs’ citizenship and residence “d[id] not constitute the powerful, near-decisive
    factors for which they contend[ed],” although the ultimate burden of persuasion still
    rested with the defendant. See id. at 1074. See also Howe v. Goldcorp Investments,
    Ltd., 
    946 F.2d 944
    , 951 (1st Cir. 1991) (because the “relevant events” surrounding
    but it ultimately vacated the forum non conveniens dismissal because the district court lacked
    subject-matter jurisdiction. See 467 F.3d at 1040, 1044.
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    the plaintiff’s claims took place in Canada, it was “not surprising” that most of the
    documents and witnesses were in Canada as well); Reid-Walen v. Hansen, 
    933 F.2d 1390
    , 1395 (8th Cir. 1991) (“When an American corporation doing extensive foreign
    business brings an action for injury occurring in a foreign country, many courts have
    partially discounted the plaintiff’s United States citizenship.”). The rule described
    in cases like Sussman is therefore narrower and more nuanced than the one which
    Citigroup asks us to adopt.
    As Citigroup acknowledges, moreover, neither the Supreme Court nor the
    Eleventh Circuit has squarely addressed whether it would be appropriate to reduce
    deference to a domestic plaintiff’s forum choice in cases like Sussman. Nor have
    we considered whether some form of intermediate deference is ever permissible for
    American plaintiffs. Compare Carijano v. Occidental Petroleum Corp., 
    643 F.3d 1216
    , 1228 (9th Cir. 2011) (rejecting intermediate deference), with Iragorri v.
    United Techs. Corp., 
    274 F.3d 65
    , 71 (2d Cir. 2001) (establishing “sliding scale”
    deference).
    We need not answer those questions here. Although Citigroup vigorously
    argues that the claims here “arise from” foreign business dealings, the plaintiffs do
    not complain of conduct or injuries occurring primarily in Mexico. Taking the
    plaintiffs’ allegations as true, Citigroup directed a scheme and engaged in acts in
    furtherance of that scheme from the United States, where it is based.            The
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    Institutional Clients Group was responsible for administering the allegedly
    fraudulent cash advance program from New York. Several employees involved in
    the alleged fraud were based in New York or Miami. And several of the allegedly
    fraudulent communications occurred in meetings on United States soil or in emails
    or calls directed to or maintained in the United States. As we read the complaint,
    this is a dispute focused on Citigroup’s conduct in the United States, and so one
    would presume—at least initially—that a trial here would be more convenient (or
    would at least not be inconvenient).
    Citigroup argues that the fraud against the plaintiffs was really perpetrated by
    Mexican entities in Mexico. But Citigroup did not present any evidence to support
    this contention, and its argument mischaracterizes the complaint, the thrust of which
    is, again, that Citigroup directed the scheme and caused the plaintiffs’ injuries from
    its offices in the United States. Accepting that Banamex and Oceanografía were key
    players in the scheme, the plaintiffs still allege that the Institutional Clients Group
    “developed and oversaw” the credit facility program, approved fraudulent credit
    applications with knowledge of the risks, and circumvented internal review
    procedures—all in the United States.
    Citigroup points to obscurities in the complaint regarding who committed
    certain acts, noting that the plaintiffs frequently allege that Citigroup “and/or”
    Oceanografía made fraudulent misrepresentations. Citigroup argues that the more
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    specific allegations in the complaint confirm that Oceanografía and its controlling
    shareholder, Amado Yáñez, made “nearly all of the alleged misrepresentations.”
    With respect to the domestic plaintiffs, Citigroup points out that they allege that “Mr.
    Yáñez and/or other Oceanografía principals traveled on dozens of occasions to
    Louisiana” to make the fraudulent misrepresentations to Otto Candies. Citigroup
    also submits that Waypoint’s claims are “overwhelmingly directed towards”
    Oceanografía and Mr. Yáñez.
    These points have some force, but the complaint’s primary allegations are
    about Citigroup’s involvement in the scheme qua administrator and supervisor.
    And, as Citigroup concedes, there are allegations in the complaint that Citigroup
    communicated directly with some of the plaintiffs in the United States. For example,
    the plaintiffs allege that Citigroup and Otto Candies discussed over email the
    mechanics of the cash advance facility and that Citigroup misrepresented
    Oceanografía’s financial situation in those communications. The plaintiffs also
    allege that Citigroup misrepresented Oceanografía’s financial situation to other
    plaintiffs and, for example, induced them to renegotiate their loans with
    Oceanografía. Citigroup’s response is that the specific allegations about its conduct
    are not relevant to the causes of action and therefore immaterial to the forum non
    conveniens analysis. For reasons we explain later, however, we have no basis at this
    stage to assess which allegations are material and which are superfluous.
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    Significantly, the plaintiffs chose to sue Citigroup—and no one else—for its
    alleged role in the fraud. They did not sue Mexican nationals—Banamex or
    Oceanografía, or their respective employees or agents—who according to Citigroup
    caused their injuries. We take no position on Citigroup’s alternative grounds for
    dismissal under Rules 9(b) and 12(b)(6), but we note that when Citigroup argues for
    forum non conveniens dismissal because the complaint “directly implicate[s] an
    alleged fraud carried out by Mexican nationals in Mexico,” it improperly assumes
    that it did not carry out the fraud. This is an argument on the merits, and not
    necessarily on whether the facts as alleged should be litigated in the United States.
    Admittedly, it can sometimes be difficult to disentangle the merits of a
    complaint from a forum non conveniens inquiry. Whoever is ultimately responsible
    for the plaintiffs’ alleged injuries may be a strong indicator of where the most
    convenient forum is. If Citigroup is correct that in the end only the Mexican entities
    can be liable, then the plaintiffs should have sued those entities instead, in which
    case Mexico would have been the presumptively most convenient forum. But, again,
    the plaintiffs sued Citigroup, and not the Mexican entities. Cf. 7 Charles Alan
    Wright, Arthur R. Miller, & Mary Kay Kane, Federal Practice and Procedure § 1623
    (3d ed. 2019) (explaining that plaintiffs may sue one or more joint tortfeasors
    without joining others, and need not join every coconspirator if joinder is not
    feasible).   If, on the other hand, the plaintiffs are correct that Citigroup is
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    independently liable for its alleged role in overseeing, directing, or participating in
    the scheme, then presumably the United States would be the most convenient forum.
    Because at this stage we accept the complaint’s allegations as true, we determine the
    applicable presumption from the plaintiffs’ perspective, and not Citigroup’s. See
    Delong Equip., 
    840 F.2d at 845
    ; Shi, 918 F.3d at 948.
    Even as the parties quarrel over the nature of the complaint and the locus of
    events, there remains an elephant in the room—Citigroup. It is the only defendant
    in this case, and it is based in the United States. Not only that, it has offices in Miami
    and conducts substantial activities throughout the United States, including New
    York—where the Institutional Clients Group is based. One would therefore think
    that it would be more convenient for Citigroup to litigate in the Southern District of
    Florida than in Mexico.
    This is yet another reason to leave the presumption for the plaintiffs’ chosen
    forum in place and require that Citigroup demonstrate—with positive evidence—
    why litigating on its home turf would be so oppressive and vexatious that a federal
    court should decline jurisdiction. When an American plaintiff sues an American
    defendant for conduct allegedly occurring in the United States, it should not be easy
    for the defendant to obtain a forum non conveniens dismissal. See, e.g., Galustian
    v. Peter, 
    591 F.3d 724
    , 732 (4th Cir. 2010) (providing greater deference in favor of
    a domestic forum where “the defendant is a resident and citizen of the forum he
    19
    Case: 18-12663     Date Filed: 07/01/2020    Page: 20 of 46
    seeks to have declared inconvenient for litigation”); Peregrine Myanmar Ltd. v.
    Segal, 
    89 F.3d 41
    , 46 (2d Cir. 1996) (in weighing the Gulf Oil factors, “the court
    starts with a presumption in favor of the plaintiff’s choice of forum, especially if the
    defendant resides in the chosen forum, as here”); Lony v. E.I. Du Pont de Nemours
    & Co., 
    935 F.2d 604
    , 608 (3d Cir. 1991) (“This case is puzzling in that frequently
    the forum non conveniens issue is raised by a defendant sued away from home who
    seeks to convince the court that the balance of relevant factors should be tipped
    against requiring it to defend in a forum far from its home jurisdiction.”). Cf. Piper
    Aircraft, 454 at 256 n.24 (citing Pain v. United Techs. Corp., 
    637 F.2d 775
    , 797
    (D.C. Cir. 1980), for the proposition that “citizenship and residence are proxies for
    convenience”).
    B
    We now turn to Citigroup’s argument that “where foreign plaintiffs
    significantly outnumber domestic plaintiffs, diminished deference should be applied
    to all of the plaintiffs’ forum choice.” Appellee’s Br. at 17. Though addressed
    preemptively by the plaintiffs in their initial brief, the district court did not reduce
    deference to the American plaintiffs based on the presence of foreign plaintiffs. It
    was only because the American plaintiffs invested in a foreign entity that the district
    court discounted the initial deference and placed them on par with their foreign
    counterparts. Because that was error, the district court on remand will need to afford
    20
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    the requisite deference to the American plaintiffs. It will then have to deal with a
    mixed group of foreign and domestic plaintiffs, potentially turning Citigroup’s
    argument into a live issue. We therefore provide a few observations.
    We have not found any cases holding that reduced deference to American
    plaintiffs is warranted when they sue alongside foreigners, but we have located a
    couple that state the opposite. In Carijano, 643 F.3d at 1228, the Ninth Circuit
    rejected the argument that Piper Aircraft stands for the proposition that “when both
    domestic and foreign plaintiffs are present, the strong presumption in favor of the
    domestic plaintiff’s choice of forum is somehow lessened.” And in Simon, 911 F.3d
    at 1183, the D.C. Circuit explained that “the addition of foreign plaintiffs does not
    render for naught the weighty interest of Americans seeking justice in their own
    courts.” Citigroup cites two unpublished district court cases in support of its
    argument, but neither is convincing.4
    4
    In Takiguchi v. MRI Int’l, Inc., No. 2:13-cv-01183, 
    2015 WL 6661479
    , at *3 (D. Nev. Oct.
    29, 2015), the plaintiffs were entitled to limited deference not because the foreign plaintiffs
    outnumbered the American plaintiffs, but because the latter conceded that they were actually
    residents of Japan and Canada, and that one was a resident of Texas (not of Nevada, where the
    district court was located). The district court, in any event, denied the motion to dismiss for forum
    non conveniens.
    In Fasano v. Juoqing Li, No. 16-cv-8759, 
    2017 WL 6764692
    , at *6 (S.D.N.Y. Dec. 29,
    2017), vacated and remanded sub nom., Fasano v. Yu Yu, 
    921 F.3d 333
     (2d Cir. 2019), the district
    court stated that “[b]ecause the foreign plaintiffs outnumber the domestic plaintiff, and because
    their financial interest in the action is much greater than the domestic plaintiff’s interest, the Court
    accords diminished deference to Plaintiffs’ choice of forum.” But the Fasano district court did
    not cite any cases in support of that proposition, and its decision was vacated and remanded for
    failure to consider a forum selection clause in the contract at issue.
    21
    Case: 18-12663     Date Filed: 07/01/2020    Page: 22 of 46
    There also does not appear to be any practical or doctrinal basis to reduce
    deference to domestic plaintiffs who sue alongside foreign plaintiffs, particularly
    when they all sue a single American defendant for conduct that they allege occurred
    in the United States. For one, the presence of foreign plaintiffs does not change the
    otherwise domestic nature of a complaint—here, that Citigroup committed wrongs
    in or from the United States, where it is based. Cf. In re Air Crash Off Long Island,
    N.Y., on July 17, 1996, 
    65 F. Supp. 2d 207
    , 217 (S.D.N.Y. 1999) (acknowledging
    that “the presence of foreign plaintiffs (who chose to sue in the United States) [did]
    not change the essentially American character of [the] case, which involve[d] a flight
    originating in the United States, a United States carrier, United States manufacturing
    defendants, and predominantly United States domiciliaries as passengers”).
    In addition, the purpose of forum non conveniens is to prevent the defendant
    from facing harassing and vexatious litigation out of all proportion to the plaintiffs’
    convenience. From Citigroup’s perspective, then, the presence of numerous foreign
    plaintiffs may not make the case more difficult to litigate in the United States.
    Citigroup may wish to take numerous depositions because of the sheer number of
    plaintiffs, but that would be true if there were thirty-nine American plaintiffs. What
    is significant for our purposes is that the presence of foreign plaintiffs would not
    necessarily lead to unwarranted burdens or additional travel for Citigroup to depose
    those plaintiffs.   The district court has broad discretion over the location of
    22
    Case: 18-12663      Date Filed: 07/01/2020      Page: 23 of 46
    depositions, see DeepGulf, Inc. v. Moszkowski, 
    330 F.R.D. 600
    , 609 (N.D. Fla. 2019)
    (collecting cases), and the general rule is that plaintiffs are required to make
    themselves available for examination in the district in which they bring suit. See 8A
    Charles Alan Wright, Arthur R. Miller, & Richard L. Marcus, Federal Practice and
    Procedure § 2112 (3d ed. 2010) (collecting cases). At the same time, the foreign
    plaintiffs will not be able to drag Citigroup to all corners of the globe to take
    corporate depositions, as there is a presumption that a defendant will be deposed in
    the district of its residence or principal place of business. See DeepGulf, 330 F.R.D.
    at 607 (collecting cases). All else being equal, the ratio of domestic to foreign
    plaintiffs does not necessarily have a bearing on Citigroup’s convenience.5
    There may be instances of blatant gamesmanship—for example, where a
    domestic plaintiff is added at the eleventh hour to strengthen the other plaintiffs’
    connections to the United States—such that reduced deference may be appropriate
    for all the plaintiffs. See Vivendi SA v. T-Mobile USA Inc., 
    586 F.3d 689
    , 694–96
    (9th Cir. 2009). But at this juncture, we see no evidence of improper forum
    shopping.      Indeed, it would be ironic to fault the foreign plaintiffs for their
    willingness to travel to the United States to sue Citigroup in its country of
    citizenship.
    5
    We say “necessarily” because at this point Citigroup has not put forward any evidence to
    the contrary.
    23
    Case: 18-12663    Date Filed: 07/01/2020    Page: 24 of 46
    Rather than reduce or enhance the deference owed to domestic or foreign
    plaintiffs, some courts have conducted a separate forum non conveniens analysis for
    each group. A bifurcated analysis may be appropriate, for example, where foreign
    and domestic plaintiffs filed separate lawsuits that were consolidated for
    administrative purposes, or where parties can be dropped or claims can be severed
    under Rule 21. See Kolawole v. Sellers, 
    863 F.3d 1361
    , 1372 (11th Cir. 2017); Tazoe
    v. Airbus S.A.S., 
    631 F.3d 1321
    , 1335 (11th Cir. 2011); King, 
    562 F.3d at
    1383–84;
    Banco Latino v. Gomez Lopez, 
    17 F. Supp. 2d 1327
    , 1333 (S.D. Fla. 1998).
    We leave it to the district court to determine whether a bifurcated analysis is
    permissible or warranted in this case once the domestic and foreign plaintiffs are
    afforded their appropriate deference on remand. But we note that—procedural
    issues aside—a split analysis might be problematic in some respects. If the domestic
    plaintiffs are permitted to move forward in the district court, then dismissing the
    foreign plaintiffs would force Citigroup to defend against two actions (assuming the
    foreign plaintiffs refile in Mexico). That could defeat the purpose of forum non
    conveniens, particularly if the parties intend to rely on the same documents and
    witnesses in both countries. See In re Assicurazioni Generali S.p.A. Holocaust Ins.
    Litig., 
    228 F. Supp. 2d 348
    , 370 (S.D.N.Y. 2002) (declining to dismiss a foreign
    plaintiff with no bona fide connection to the chosen forum because the domestic
    plaintiffs in the consolidated action were permitted to move forward, and therefore
    24
    Case: 18-12663    Date Filed: 07/01/2020    Page: 25 of 46
    the bulk of evidence would already be in the United States). Then again, this
    potential problem would be moot if the claims of the domestic plaintiffs are
    dismissed for forum non conveniens. These matters are for the district court to
    consider on remand.
    Finally, we address and reject Citigroup’s argument that the two American
    plaintiffs are only “nominal” litigants entitled to reduced deference. The district
    court found that these two plaintiffs were American citizens for purposes of its forum
    non conveniens analysis and said no more about whether their role in the lawsuit was
    legitimate. There has not been discovery on this issue and there is no evidence that
    these entities are not real parties-in-interest or that they otherwise lack standing to
    assert their claims.
    C
    In sum, it was inappropriate for the district court to discount or reduce the
    deference owed to the chosen forum of the American plaintiffs based on their
    decision to invest or transact business abroad. Nor was there any other reason to
    deviate from the normal rule that an American plaintiff suing in the United States is
    presumed to have chosen the most convenient forum. A remand is therefore
    warranted. See SME Racks, 
    382 F.3d at 1102
     (reversing a forum non conveniens
    dismissal due to the district court’s failure to afford the proper deference owed to
    domestic plaintiffs).
    25
    Case: 18-12663     Date Filed: 07/01/2020   Page: 26 of 46
    Our decision today does not guarantee that plaintiffs can avoid forum non
    conveniens dismissal by making vague allegations, or by strategically joining
    foreign plaintiffs together with domestic ones and suing a single domestic defendant.
    The plaintiff-friendly, facial reading of the complaint leads only to an initial
    presumption. That presumption is not dispositive, and a defendant can always
    marshal positive evidence to overcome it. See, e.g., Contact Lumber Co. v. P.T.
    Moges Shipping Co., 
    918 F.2d 1446
    , 1449 (9th Cir. 1990) (“Although a defendant
    must meet an almost impossible burden in order to deny a citizen access to the courts
    of this country, the cases demonstrate that defendants frequently rise to the
    challenge.”) (internal quotation marks and citation omitted). Citigroup had the
    opportunity to engage in limited discovery related to forum non conveniens and to
    present evidence in support of its motion. But, as explained below, Citigroup
    opposed discovery and failed to carry its burden.
    IV
    We now consider the Gulf Oil private and public interest factors. Although
    the district court had wide latitude to weigh the evidence and determine whether
    those factors pointed clearly toward dismissal, the threshold error on the deference
    owed to the domestic plaintiffs tainted its analysis. The error in effect switched the
    burden of persuasion and allowed Citigroup to obtain a forum non conveniens
    dismissal without presenting any evidence on these factors.
    26
    Case: 18-12663     Date Filed: 07/01/2020    Page: 27 of 46
    As noted earlier, Citigroup bore the burden of persuasion on all elements of
    its forum non conveniens motion. See Leon, 251 F.3d at 1311. A strong presumption
    in favor of the American plaintiffs should have forced Citigroup to offer “positive
    evidence of unusually extreme circumstances” and “material injustice” to oust those
    plaintiffs from their chosen domestic forum. See SME Racks, 
    382 F.3d at 1101
    (quoting Burt, 
    218 F.2d at 357
    ). Yet Citigroup opposed discovery and offered no
    evidence on the private interest factors.
    The district court also erred with respect to the foreign plaintiffs. Even though
    they were entitled to “somewhat” less deference than their domestic counterparts,
    that lesser degree of deference should not have removed Citigroup’s burden entirely.
    By failing to proffer any positive evidence of private inconvenience, Citigroup failed
    to carry its burden as to both the domestic and foreign plaintiffs.
    A
    We begin with Piper Aircraft, which involved only foreign plaintiffs and
    therefore established the floor of a defendant’s forum non conveniens burden. That
    case arose from a plane crash in Scotland. See 454 U.S. at 238–39. The plane was
    subject to Scottish air traffic control and operated through a Scottish air taxi service,
    and the pilot and passengers were all Scottish subjects and residents. See id. at 239.
    The Supreme Court held that, under these circumstances, the defendant’s burden to
    demonstrate private inconvenience was not particularly heavy; the defendant was
    27
    Case: 18-12663     Date Filed: 07/01/2020    Page: 28 of 46
    not required to “submit affidavits identifying the witnesses they would call and the
    testimony these witnesses would provide if the trial were held in the alternative
    forum.” Id. at 258. At the same time, the defendant was required to “provide enough
    information to enable the [d]istrict [c]ourt to balance the parties’ interests.” Id. The
    Supreme Court did not explain what would constitute “enough” information, so it is
    useful to examine the facts and history of the case to better delineate its holding.
    Before the case reached the Supreme Court, the Third Circuit had reversed the
    district court’s dismissal for forum non conveniens, concluding that the defendant
    did not “set[ ] forth the requisite specific information” of private inconvenience. See
    Reyno v. Piper Aircraft Co., 
    630 F.2d 149
    , 161 (3d Cir. 1980), rev’d, 
    454 U.S. 235
    (1981). But the district court had in fact relied on affidavits, including one that
    attested to the defendant’s witnesses and their testimony on certain topics, albeit in
    broad strokes. See Piper Aircraft, 454 U.S. at 259 & n.27. The relevant affidavit
    did not identify witnesses by name, but offered general categories of witnesses—for
    example, by occupation or by role in the incident in question—as well as some
    expected topics of testimony. See id. See also Petition for Writ of Certiorari, Piper
    Aircraft Co. v. Reyno, Nos. 80-848 & 80-883 (filed Nov. 25, 1980), at Ex. F
    (Affidavit of Charles J. McKelvey). On that record, the Supreme Court held that
    “sufficient information was provided” to allow the district court to assess the
    relevant interests. See Piper Aircraft, 454 U.S. at 258–59. We therefore do not read
    28
    Case: 18-12663         Date Filed: 07/01/2020         Page: 29 of 46
    Piper Aircraft as holding that any less information would have sufficed under the
    circumstances.6
    When American plaintiffs sue in federal court, the defendant’s burden is
    heavier. As we have long held, a defendant must come forward with “positive
    evidence of unusually extreme circumstances” such that the district court is
    “thoroughly convinced that material injustice is manifest before exercising any such
    discretion as may exist to deny a United States citizen access to the courts of this
    country.” SME Racks, 
    382 F.3d at 1101
     (quoting Burt, 
    218 F.2d at 357
    ). 7
    6
    The affidavit provided, for example, that the defendant “would call as witnesses the owners
    and employees of the Scottish air-taxi company which owned and operated the aircraft and hired
    the pilot,” that their testimony “would concern the cause of and liability for this accident,” and that
    all “such persons are residents and citizens of Scotland.” The affidavit also provided that the
    defendant “would call as witnesses the persons who were responsible for the training and licensing
    of the pilot of this aircraft,” that their testimony “would concern the cause of the accident and the
    liability thereof,” and that those witnesses also were residents and citizens of Scotland. The
    affidavit continued like this for five categories of witnesses. See Petition for Certiorari, Piper
    Aircraft Co. v. Reyno, Nos. 80-848 & 80-883 (filed Nov. 25, 1980), at Ex. F.
    7
    For cases reversing forum non conveniens dismissals because the defendant failed to proffer
    sufficient evidence in light of the circumstances of the case, see Lacey, 
    862 F.2d at 44
     (holding
    that the evidence was insufficient because the defendants “submitted no evidence to support their
    contentions,” whereas the plaintiff produced a report that the cause of a crash was a defective
    product manufactured in the United States, and submitted affidavits “that various witnesses on the
    product liability issue are located in Pennsylvania and throughout the United States and are
    available to testify here”), and Baris v. Sulpicio Lines, Inc., 
    932 F.2d 1540
    , 1550 (5th Cir. 1991)
    (rejecting bare allegations of private inconvenience and holding that “in order to fulfill the
    requirements of Gulf Oil, a more detailed presentation must be made by the defendants concerning
    the private interest factors”).
    For cases holding that there was sufficient evidence of inconvenience, see Interface
    Partners Int’l Ltd. v. Hananel, 
    575 F.3d 97
    , 105 (1st Cir. 2009) (affirming forum non conveniens
    dismissal where the defendant “adequately identified the twenty-nine witnesses he intend[ed] to
    call in the proceedings[,] . . . indicated the relevance of at least ten” of those witnesses, and offered
    “affidavits from those ten” witnesses that they would testify to “various facts disputing the
    allegations of misconduct asserted”), Delta Air Lines, Inc. v. Chimet, S.p.A., 
    619 F.3d 288
    , 300 (3d
    29
    Case: 18-12663        Date Filed: 07/01/2020      Page: 30 of 46
    We have not set out strict rules on what constitutes “unusually extreme
    circumstances,” and it probably does not make sense to do so. That is because the
    quantum and quality of evidence needed will depend on the unique facts and
    circumstances of the given case. See, e.g., Lacey, 
    862 F.2d at 44
     (holding that “on
    the particular facts of this case, the defendants did not submit sufficient information
    to allow the district court properly to undertake the forum non conveniens analysis”).
    In complex commercial cases—with elaborate legal claims and allegations involving
    transnational communications, or with multiple international and domestic parties—
    the locus of events may be difficult to pinpoint.
    B
    Because this is a complex commercial dispute with domestic and foreign
    plaintiffs, Citigroup should have offered some evidence of inconvenience and
    certainly no less than what the defendant provided in Piper Aircraft. After a
    thorough review of the record, we find very little if any positive evidence of
    Citigroup’s inconvenience, especially regarding the location of documents and
    witnesses.
    Cir. 2010) (affirming a forum non conveniens dismissal because the defendant “identified the
    witnesses it intended to depose and proffered in oral argument the information that it expected to
    obtain”), and Gschwind v. Cessna Aircraft Co., 
    161 F.3d 602
    , 610 (10th Cir. 1998) (holding that
    the defendants, who “c[a]me forward with documentary evidence,” offered the “bare minimum of
    evidence necessary,” although the court “certainly would have benefitted from additional evidence
    in the record”).
    30
    Case: 18-12663     Date Filed: 07/01/2020    Page: 31 of 46
    In its forum non conveniens motion, Citigroup argued that “key individuals
    identified in the [amended complaint] that would be critical to Citigroup’s defense
    include former Banamex employees located in Mexico.” But it did not identify any
    of the former Banamex employees by name or position, attest to their residence in
    Mexico with affidavits, anticipate the basic topics of their testimony, or explain how
    these unidentified witnesses would be critical to its case. Citigroup also asserted
    that its defense would be based on corporate and banking records and
    communications in Mexico, including documents belonging to Citigroup’s alleged
    Mexican co-conspirators. Again, however, it did not identify these documents,
    generally or specifically.    Citigroup also speculated—again without details or
    evidence—that “[t]here is no reason to doubt that equally critical witnesses from
    [Oceanografía] and Pemex . . . are also located in Mexico.”
    The plaintiffs, on the other hand, allege that Citigroup employees involved in
    the cash advance program are in the United States and identify some of these
    employees by name. The plaintiffs also refer to Citigroup’s public statement that it
    fired individuals involved in the fraud both “inside and outside” of the United States.
    We not only accept these allegations as true at this stage, we also draw from them
    appropriate reasonable inferences. See Delong Equip., 
    840 F.2d at 845
    ; Shi, 918
    F.3d at 948. One reasonable inference is that these domestic witnesses have material
    information and are available or subject to compulsory process in the United States.
    31
    Case: 18-12663     Date Filed: 07/01/2020    Page: 32 of 46
    Citigroup made some factual assertions in its motion, but it did so by either
    misconstruing the complaint or by contradicting the plaintiffs’ allegations without
    discrete evidentiary support. For example, Citigroup argued that “Mexico is where
    the cash advance contracts were negotiated and executed,” which implies that
    material evidence will be located there. The paragraph of the complaint to which
    Citigroup cited, however, alleges that “Citigroup, through Banamex, and
    Oceanografía entered into a Cash Advance Contract in September 2012.” Nowhere
    do the plaintiffs allege that the cash advance program was negotiated and executed
    exclusively in Mexico. Indeed, they sought discovery on that very point (and
    others). Citigroup may be correct, but it had the burden to rebut the plaintiffs’
    allegations on these matters with positive evidence. No evidence, by definition, is
    an absence of positive evidence.
    Even if we were to accept its unsupported factual claim that the cash advance
    program was negotiated and executed in Mexico, Citigroup did not rebut the
    plaintiffs’ plausible allegations that it would have collected and stored the relevant
    documents during the SEC and Justice Department investigations. The plaintiffs,
    we note, allege that a Citigroup employee in Miami led an internal audit into the
    cash advance program. Citigroup did not contest this factual allegation with an
    affidavit from a corporate representative or otherwise explain why documents from
    that audit would not be available in the United States.
    32
    Case: 18-12663     Date Filed: 07/01/2020    Page: 33 of 46
    Citigroup argued below that “Mexico is where [Oceanografía’s] alleged
    falsification of Pemex work estimates and authorizations took place.” This may be
    true, but the plaintiffs allege that the ordinary business practice was for Oceanografía
    to send those work estimate documents to Citigroup in the United States. Based on
    this unrebutted allegation, it is not clear why Citigroup does not already have—or
    could not easily access—the allegedly falsified work estimates and authorization
    documents, even if they were originally created in Mexico. The plaintiffs also
    plausibly allege that Citigroup controls all the email servers of its subsidiaries,
    including Banamex, from the United States. Given the absence of evidence to the
    contrary, it should be relatively easy for Citigroup to access the relevant documents
    from those servers. If that is not so, Citigroup should explain why not. See Simon,
    911 F.3d at 1186 (explaining that “[d]igitization . . . has eased the burden of
    transcontinental document production and has increasingly become the norm in
    global litigation”); Maggie Gardner, Retiring Forum Non Conveniens, 
    92 N.Y.U. L. Rev. 390
    , 414 (2017) (arguing that, because of modern technology and digitization,
    “transnational evidence collection is far less burdensome today than it was even at
    the time of Piper,” such that the defendant’s burden of proving hardship should be
    harder to meet).
    Citigroup’s contentions about the location of key evidence and witnesses may
    well be plausible. They may even be correct. But Citigroup failed to support those
    33
    Case: 18-12663        Date Filed: 07/01/2020       Page: 34 of 46
    contentions with positive evidence on the Gulf Oil private interest factors, and
    therefore failed to carry its burden.8
    C
    Citigroup makes a more sweeping argument on appeal. It contends that the
    district court viewed the complaint as a whole and reasonably concluded that the
    relevant evidence would be in Mexico. Citigroup relies on Ford v. Brown, 
    319 F.3d 1302
    , 1308 (11th Cir. 2003), for the proposition that district courts must analyze the
    elements of the plaintiffs’ causes of action, consider what evidence is required to
    8
    Citigroup did provide some positive evidence at the forum non conveniens stage, but its
    evidence did not speak to the location of documents and witnesses.
    First, Citigroup cited to an expert affidavit and a copy of a complaint that a Mexican
    affiliate of Otto Candies had filed in Mexico against Banamex and Citibank, N.A. (a subsidiary of
    Citigroup not named in this case). Those documents tended to show that Mexico was an adequate
    and available forum. As noted above, the plaintiffs do not challenge this conclusion on appeal,
    and so this evidence is not relevant for our purposes.
    Second, Citigroup referred to the same expert affidavit to show that it would be difficult to
    compel Mexican witnesses to testify in the United States and that Mexican banking laws would
    prevent Banamex from sharing information absent permission from the Mexican banking
    regulator. These contentions, however, presuppose (1) that material witnesses are in Mexico, and
    not in the United States, and (2) that Citigroup does not already have domestic access to the
    Banamex documents apparently protected by Mexican banking secrecy laws. Citigroup did not
    offer any evidence to establish these two implicit and necessary premises.
    Third, Citigroup submitted various SEC filings to demonstrate that the Institutional Clients
    Group was a “business segment,” not a legal entity, and that the Group had employees all over the
    world, including at subsidiaries such as Banamex. The district court did not rely on these
    documents, and it is not clear how the Group’s status as a business segment rather than a distinct
    legal entity changes the forum non conveniens analysis. The complaint does not depend on that
    distinction, and instead focuses on the role that the Group played in developing and overseeing the
    credit facilities. The fact that the Group is a business segment with employees at Banamex,
    moreover, could be a double-edged sword. It might make it more plausible that New York-based
    executives of the Group directed the alleged scheme from the United States through their
    subordinates in Mexico. That would be consistent with the plaintiffs’ claims, and it would also
    mean that evidence of the fraudulent conduct would be accessible in the United States.
    34
    Case: 18-12663     Date Filed: 07/01/2020    Page: 35 of 46
    prove and disprove each element, and make a reasoned assessment about the location
    of relevant evidence.
    There are two problems with Citigroup’s argument. The first is that the
    district court did not delineate the elements of each claim in order to sort through the
    relevant and irrelevant evidence. The second is that the court did not have positive
    evidence to sort through in the first place. This case is therefore similar to La
    Seguridad v. Transytur Line, 
    707 F.2d 1304
    , 1306–07, 1310 (11th Cir. 1983), where
    we reversed a forum non conveniens dismissal because the district court “did not
    attempt to go beyond [the] representations of counsel to ascertain the underlying
    facts of the case” and “did not attempt to pin counsel down to their theories of the
    case, and the facts that would support their theories.” Likewise, the district court
    here stated—without further explanation—that it would be necessary for the
    plaintiffs to establish the “underlying fraud” in Mexico. It also accepted the
    contention of Citigroup that its defense would require documents in Mexico, even
    though Citigroup did not describe with any particularity the defense or the evidence
    necessary to establish it.
    Citigroup assumes that the district court must have “appreciated” which facts
    would be relevant to the litigation, and therefore tries to reconstruct what it sees as
    the court’s implicit reasoning. But that is not enough for us evaluate the factual and
    legal issues of the case. See 
    id. at 1308
     (“Without delineating the elements of the
    35
    Case: 18-12663     Date Filed: 07/01/2020    Page: 36 of 46
    claims and the defenses thereto, we simply cannot know the factual issues raised by
    these claims, and are left only to speculate as to what witnesses and documents might
    be relevant and where they might be located.”).
    Even if we were to accept Citigroup’s reconstructed argument—that the RICO
    claims would require the plaintiffs to establish an “enterprise” with foreign entities
    and that the aiding and abetting fraud claims would require the plaintiffs to establish
    an underlying fraud in Mexico—it is still not clear why it wouldn’t be just as easy
    to develop these theories in the United States. First, based on their allegations, it is
    plausible that the plaintiffs could establish the RICO enterprise and underlying fraud
    with documents already in Citigroup’s possession. Indeed, the plaintiffs contend
    that there is no real dispute concerning the events in Mexico, so it seems they believe
    they can prove their case without resorting to additional documents or witnesses
    there. Second, the plaintiffs intend to prove that Citigroup controlled and directed
    the enterprise from the United States, so it is not clear why the bulk of evidence
    wouldn’t be in the United States, even if some documents tending to establish the
    global enterprise could also be found in Mexico. Third, Citigroup’s argument
    ignores the plaintiffs’ direct fraud and fiduciary duty claims, which appear at first
    glance to require investigation into Citigroup’s conduct in the United States. In any
    event, no matter how we try to dissect the various claims, this is a “fragmentary
    36
    Case: 18-12663       Date Filed: 07/01/2020   Page: 37 of 46
    record” on which it is “impossible to make a sound determination of relative
    convenience.” That requires us to remand for further development. See 
    id.
    The district court erred in concluding that the “ease of access to evidence”
    factor supported dismissal. That conclusion was based on unsupported findings that
    the material documents and evidence “are all located in Mexico,” and that “all of the
    key players in this dispute . . . will be available in Mexico.” The court also erred in
    concluding that the “availability of witnesses and compulsory process” factor favors
    dismissal. That conclusion was based on the unsupported contention of Citigroup
    that it needed to rely on witnesses in Mexico for its defense. On this record, these
    errors were fatal to the Gulf Oil private interest analysis. See Ford, 
    319 F.3d at 1308
    (“Perhaps the most important ‘private interest’ of the litigants is access to
    evidence.”); 17 James Wm. Moore et al., Moore’s Federal Practice
    § 111.74[3][c][iii] (3d ed. 2020) (“Of all the private interest factors . . . the relative
    ability of the forums to compel the attendance of significant unwilling witnesses at
    trial often is considered the most important factor, because the presentation of live
    testimony often is ‘essential to a fair trial.’”).
    D
    The district court also concluded that the public interest factors weighed in
    favor of litigation in Mexico. Although Citigroup is the only named defendant, the
    case involved “four primary players, three of which are unquestionably Mexican
    37
    Case: 18-12663     Date Filed: 07/01/2020    Page: 38 of 46
    entities”—Banamex, Oceanografía, and Pemex. The court reasoned that Mexico
    “clearly has a substantial interest in this case being litigated in Mexico as evidenced
    by numerous parallel proceedings underway and the fact that one of the key players
    in this dispute is owned by the Mexican government.”
    The district court did not ultimately find “such meaningful connections
    between any of the parties and [the Southern District of Florida] that would outweigh
    the clear interest Mexico has over this litigation.”         But that conclusion is
    questionable because the plaintiffs allege that Citigroup conducts substantial
    business in the Southern District of Florida and that two of its Miami-based
    employees audited the cash advance program after the scandal unfolded in Mexico.
    There is therefore some local interest in the case. On the other hand, there does not
    appear to be any local need to have the case dismissed. The district court did not
    cite, for example, any administrative difficulties or docket congestion in the
    Southern District that warranted a forum non conveniens dismissal.
    But even if the district court adequately considered the administrative interests
    of the Southern District, it failed to consider the sovereign interests of the United
    States. See SME Racks, 
    382 F.3d at 1104
     (explaining that although the district court
    “recognized that Florida had in interest in [that case], it failed to recognize any
    federal interest”). The United States has a stake in this litigation, and that should
    factor into the public interest analysis. See Republic of Panama, v. BCCI Holdings
    38
    Case: 18-12663     Date Filed: 07/01/2020   Page: 39 of 46
    (Luxembourg) S.A., 
    119 F.3d 935
    , 953 (11th Cir.1997) (“Relevant public interest
    factors include the sovereigns’ interests in deciding the dispute[.]”).
    As explained above, the plaintiffs opted to sue Citigroup for its alleged role in
    the fraud. If they succeed in proving the facts and legal claims, as alleged, then
    Citigroup—a United States corporation—would be liable to two American plaintiffs
    for causing them injuries from its United States offices. We have observed that “a
    sovereign has a very strong interest when its citizens are allegedly victims and the
    injury occurs on home soil.” SME Racks, 
    382 F.3d at 1104
    . See also Esfeld v. Costa
    Crociere, S.P.A., 
    289 F.3d 1300
    , 1311 (11th Cir. 2002) (“There is a strong federal
    interest in making sure that plaintiffs who are United States citizens generally get to
    choose an American forum for bringing suit, rather than having their case relegated
    to a foreign jurisdiction.”). As further evidence that the United States has a
    substantial interest in this case, the Justice Department and SEC conducted domestic
    investigations into Citigroup for the cash advance program at issue. See Carijano,
    643 F.3d at 1232 (explaining that the United States has a “significant interest in
    providing a forum for those harmed by the actions of its corporate citizens”). On
    remand, the district court must consider the interests of the United States in
    analyzing the Gulf Oil public interest factors.
    39
    Case: 18-12663     Date Filed: 07/01/2020    Page: 40 of 46
    V
    We now turn to the discovery conditions that the district court imposed in its
    order, as the parties dispute their propriety and efficacy. Because we are reversing
    on other grounds, we do not directly address whether the conditions, as phrased,
    were appropriate. But we provide some thoughts for the district court and the parties
    to consider on remand.
    In Piper Aircraft, the Supreme Court suggested that, in order to mitigate the
    practical difficulties of forum non conveniens dismissals, “district courts might
    dismiss subject to the condition that defendant corporations agree to provide the
    records relevant to the plaintiff’s claims.” 454 U.S. at 257 n.25. The Supreme Court
    did not explain, however, how district courts should enforce discovery conditions as
    litigation proceeded abroad. Nonetheless, following the Piper Aircraft decision, it
    became common practice for courts to include stipulations, not only regarding
    discovery, but also involving the defendant’s consent to foreign jurisdiction and final
    judgment, and the defendant’s waiver of foreign statutes of limitation.
    With respect to discovery, district courts have imposed conditions that range
    from the parties having to make “relevant” documents and witnesses available to the
    parties consenting to abide by the Federal Rules of Civil Procedure. We have
    approved of these types of discovery conditions and have even held that the
    imposition of such conditions supported the finding of an adequate, alternative
    40
    Case: 18-12663      Date Filed: 07/01/2020      Page: 41 of 46
    forum. See Satz v. McDonnell Douglas Corp., 
    244 F.3d 1279
    , 1283 (11th Cir. 2001)
    (affirming the district court’s finding that the foreign court was adequate in part
    because the defendant “agree[d] to conduct all discovery in accordance with the
    Federal Rules of Civil Procedure”); Magnin v. Teledyne Cont’l Motors, 
    91 F.3d 1424
    , 1430–31 (11th Cir. 1996) (affirming a forum non conveniens dismissal in part
    based on the condition that any domestic discovery “be done in accordance with the
    Federal Rules of Civil Procedure”). 9
    In this case, the district court required Citigroup to “reasonably make
    available all relevant documents and witnesses within its control,” and the plaintiffs
    would have been able “to move to reinstate the action within ninety (90) days of
    [Citigroup] failing to comply” with that or any other condition. Given our precedent,
    we do not fault the district court for imposing such a typical condition in its order.
    But we urge the parties and the court to re-evaluate the limits and contours of that
    condition in case the district court again dismisses for forum non conveniens.
    For starters, what rules would govern the scope of “reasonableness,”
    “relevance,” and “control”? Would those concepts be defined by Mexican law or
    by the Federal Rules of Civil Procedure? The plaintiffs urge the latter, arguing that
    9
    Cases involving similar discovery conditions are voluminous. See, e.g., Mercier v.
    Sheraton Int’l, Inc., 
    981 F.2d 1345
    , 1358 (1st Cir. 1992); Stewart v. Dow Chem. Co., 
    865 F.2d 103
    , 104–05 (6th Cir. 1989); Oto v. Airline Training Ctr. Arizona, Inc., 
    247 F. Supp. 3d 1098
    ,
    1109 (D. Ariz. 2017).
    41
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    we have “emphasized” dismissals conditioned on compliance with U.S. discovery
    rules. Although we have sanctioned that type of condition, we have also approved
    of a condition that only required disclosure of “relevant” documents without
    reference to the Federal Rules. See Tazoe, 
    631 F.3d at 1330
    .
    Either type of condition could present problems. As the plaintiffs note, the
    required disclosure of “relevant” evidence is open-ended. If foreign law governs
    relevance, the condition subjects the parties to some uncertainty and to the
    idiosyncrasies of the foreign court, which to some extent undermines the purpose of
    forum non conveniens. See Maggie Gardner, Parochial Procedure, 
    69 Stan. L. Rev. 941
    , 987 (2017) (arguing that “it is hard for judges to forecast whether the alternative
    foreign forum will resolve the defendants evidentiary concerns” or “whether the
    foreign court’s jurisdiction over evidence will actually translate into party access”).
    Requiring the parties to follow the Federal Rules, on the other hand, may provide
    them with more clarity about their ongoing obligations. But we have not given much
    more thought to what mechanisms, or legal authority, the district court has at its
    disposal to ensure compliance with the Federal Rules while a dismissed case is being
    litigated in a foreign court. What permits the district court to adjudicate discovery
    disputes in a case that it has already dismissed? Does the court need to retain some
    42
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    sort of jurisdiction? And what happens if those disputes are also pending before a
    Mexican court?10
    As noted, the district court included a “return jurisdiction” clause, which
    permits the plaintiffs to refile in the Southern District of Florida in the event of a
    breach of a condition and perhaps would encourage Citigroup’s compliance with the
    discovery conditions. We have modified dismissal orders to add return jurisdiction
    clauses—at least where there was some indication that the foreign court would not
    assume jurisdiction. See Leon, 251 F.3d at 1316; King, 
    562 F.3d at 1384
    . But with
    the understanding that a return jurisdiction clause is permissible, we still foresee
    possible practical difficulties.
    As one commentator has explained, the efficacy of a return jurisdiction clause
    depends on a “herculean conception of [the] plaintiffs’ patience, litigiousness, and
    financial resources.” Gardner, Parochial Procedure, 69 Stan. L. Rev. at 990. Some
    plaintiffs may not have the resources or appetite to refile and start anew in federal
    court, especially after protracted litigation abroad.              That presupposes that the
    10
    Other courts have noted some of these issues in passing. See In re Union Carbide Corp. Gas
    Plant Disaster at Bhopal, India in Dec., 1984, 
    809 F.2d 195
    , 205 (2d Cir. 1987) (explaining that a
    discovery stipulation would be “subject to such approval as may be required of the [foreign] court,”
    and otherwise “the parties will be limited by the applicable discovery rules of the [foreign] court
    in which the claims will be pending”); Pinder v. Moscetti, 
    666 F. Supp. 2d 1313
    , 1321 (S.D. Fla.
    2008) (requiring the defendants to provide all relevant evidence within their custody and control,
    but recognizing that such a condition “d[id] not extend the discovery allowed under the Federal
    Rules of Civil Procedure to litigation in the Bahamas,” as discovery “shall be governed by the
    applicable discovery rules of the Bahamas court”).
    43
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    plaintiffs even had the resources to travel to and refile in the foreign court in the first
    place. See Martin Davies, Time to Change the Federal Forum Non Conveniens
    Analysis, 
    77 Tul. L. Rev. 309
    , 319 (2002) (explaining that “few plaintiffs even bother
    to pursue their claim in the alternative foreign forum following forum non
    conveniens dismissal from a U.S. court.”) (italics added).
    For plaintiffs who do have resources for further litigation, they may actually
    seek out or manufacture disputes in the hopes that even a minor discovery
    disagreement could trigger a return jurisdiction clause and reopen the doors to
    federal court. The plaintiffs here, for example, might want to seek extremely broad
    discovery and then refile in the district court the moment that Citigroup withholds a
    document on relevance grounds.
    Accordingly, on remand, the district court should consider whether a single
    breach would permit the plaintiffs to reinstitute their case in federal court, and
    whether a breach must be material. If so, what would constitute a “material” breach,
    and under whose law? Moreover, could Citigroup “cure” a breach if the plaintiffs
    file a discovery motion and the district court concludes that the withheld documents
    were relevant? That is, if the district court resumes jurisdiction and resolves a
    discovery dispute in the plaintiffs’ favor, could Citigroup agree to produce the
    withheld documents and then simply return to the Mexican court?                  Or does
    Citigroup, like Julius Caesar, cross the Rubicon once it improperly withholds a
    44
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    relevant document? Without considering these questions (and perhaps others), the
    district court may face practical problems down the road which could make litigation
    less convenient for everyone involved.
    VI
    The district court did not apply the deference owed to the domestic plaintiffs,
    and it erred in weighing the Gulf Oil private interest factors as to all the plaintiffs
    because Citigroup did not satisfy its burden. We therefore reverse and remand for
    further proceedings, including consideration of the United States’ interests under the
    public interest factors.
    The district court may in its discretion permit limited discovery, hold an
    evidentiary hearing, or accept additional evidence and supplemental briefing from
    the parties on the private and public interest factors. Because the plaintiffs have not
    challenged the district court’s findings that Mexico is an adequate and available
    forum, or that they would not be subject to undue inconvenience or delay if they had
    to reinstate their case in Mexico, those findings stand. We also leave in place the
    district court’s unchallenged findings with respect to the enforceability of the foreign
    judgment, though we take no view on the weight of this fact in the district court’s
    Gulf Oil analysis on remand.
    We do not address at this time whether the district court erred in its
    understandable attempt to ensure that Citigroup would provide adequate discovery
    45
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    in Mexico. We also do not take any view on Citigroup’s alternative arguments for
    dismissal, which the district court did not reach.
    REVERSED AND REMANDED.
    46