Aquamar S.A. v. Del Monte Fresh ( 1999 )


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  •                                                                              PUBLISH
    IN THE UNITED STATES COURT OF APPEALS
    FILED
    FOR THE ELEVENTH CIRCUIT              U.S. COURT OF APPEALS
    ELEVENTH CIRCUIT
    -----------------------               06/30/99
    No. 95-5198                   THOMAS K. KAHN
    -----------------------                CLERK
    D. C. Docket Nos. 95-6313-CIV, 95-6314-CIV,
    95-6315-CIV, 95-6316-CIV, 95-6317-CIV, 95-6318-CIV,
    95-6319-CIV, 95-6320-CIV (consolidated)
    AQUAMAR S.A.; EMELORSA-EMPACADORA
    EL ORO; INDUSTRIAL Y AGRICOLA 44 S.A.,
    Plaintiffs-Appellees,
    versus
    DEL MONTE FRESH PRODUCE N.A., INC.;
    DEL MONTE FRESH PRODUCE COMPANY;
    CIBA-GEIGY LIMITED,
    Defendants-Appellants,
    PROGRAMA NACIONAL DE BANANO,
    Third-Party Defendants-Appellees.
    ------------------------
    Appeal from the United States District Court
    for the Southern District of Florida
    -------------------------
    (June 30, 1999)
    Before TJOFLAT and EDMONDSON, Circuit Judges, and KRAVITCH, Senior Circuit Judge.
    KRAVITCH, Senior Circuit Judge:
    This appeal presents several novel issues regarding appellate jurisdiction and
    the waiver provisions of the Foreign Sovereign Immunities Act of 1976 (“FSIA”), 
    28 U.S.C. §§ 1330
    , 1602-11. Defendants/appellants Del Monte Fresh Produce Company,
    Del Monte Fresh Produce N.A., Inc., and Ciba-Geigy Limited (collectively
    “appellants”) contend that Programa Nacional de Banano (“PNB”), an Ecuadorian
    government agency, has expressly waived its sovereign immunity from suit under the
    FSIA. They appeal an order dismissing their third-, fourth- and fifth-party complaints
    against PNB1 upon a finding that PNB enjoys sovereign immunity and remanding the
    cases to state court for lack of subject matter jurisdiction. Plaintiffs/appellees
    (collectively “plaintiffs”) and third-party defendants/appellees PNB and the Republic
    of Ecuador contend that PNB’s dismissal is not reviewable on appeal and that the
    district court correctly determined that PNB had not waived its sovereign immunity.
    Plaintiffs also have moved for attorneys’ fees.
    I.    BACKGROUND AND PROCEDURAL HISTORY
    This action has made its way through the courts of three jurisdictions: the
    United States, the State of Florida, and the Republic of Ecuador. It originated in 1995
    1
    Defendants filed six third-party complaints, one fourth-party complaint and one fifth-
    party complaint against PNB in eight actions, which the district court consolidated for pretrial
    purposes in May 1995.
    2
    when plaintiffs, commercial shrimp farmers in Ecuador, claimed in a series of Florida
    state court actions that fungicides and herbicides produced or supplied by the
    defendants and used on Ecuadorian banana farms had killed their shrimp. The
    defendants filed third-, fourth- and fifth-party complaints against PNB, a department
    within the Ministry of Agriculture and Livestock of the Republic of Ecuador, which
    removed the cases to federal court pursuant to 
    28 U.S.C. § 1441
    (d). The only basis
    for federal subject matter jurisdiction was PNB’s presence under 
    28 U.S.C. § 1330
    (a),
    which gives the federal courts jurisdiction over foreign states and their agencies and
    instrumentalities. PNB then joined in defendants’ motion to dismiss the actions on the
    grounds of forum non conveniens.
    Plaintiffs moved to strike the complaints against PNB, arguing, among other
    things, that the district court did not have jurisdiction over PNB because PNB had
    sovereign immunity from suit under the FSIA.2 A flurry of communications ensued
    2
    A typical sovereign immunity inquiry pits a defendant attempting to claim immunity
    against a plaintiff who argues that an exception to immunity applies. These cases presented the
    district court with more unusual circumstances: the plaintiffs claimed that sovereign immunity
    existed, while representatives of the foreign sovereign defendant, PNB, claimed that it did not.
    On appeal, PNB now argues that it never waived sovereign immunity after all. This odd state of
    affairs may have resulted from Florida’s evolving forum non conveniens jurisprudence. At the
    time of the alleged waivers, a federal court was far more likely than a Florida court to dismiss a
    case involving events taking place in a foreign country on forum non conveniens grounds. This
    difference between the federal and state systems disappeared in January 1996, when the Florida
    Supreme Court adopted the federal courts’ forum non conveniens analysis. See Kinney Sys.,
    Inc. v. Continental Ins. Co., 
    674 So. 2d 86
     (Fla. 1996) (adopting the approach announced in Gulf
    Oil Corp. v. Gilbert, 
    330 U.S. 501
    , 
    67 S. Ct. 839
     (1946)).
    3
    from Ecuadorian government officials and legal experts on whether PNB and the
    Ecuadorian government had, could, or were required to waive sovereign immunity.
    First, PNB’s legal counsel filed documents on behalf of PNB that purported to waive
    PNB’s sovereign immunity. PNB’s May 4, 1995 Statement of Position stated that
    “PNB hereby, and for the purposes of this litigation and this litigation only . . .
    explicitly waives its immunity from the jurisdiction of this Court pursuant to 
    28 U.S.C. § 1605
    (a)(1),” but went on to say that the waiver did not apply to the
    government of Ecuador as a whole.3 PNB later attempted to clarify its position,
    stating that
    The Republic of Ecuador, acting through its Ambassador to the United
    States and the undersigned counsel, ha[s] made it clear that any
    immunity from jurisdiction has been waived with respect to the
    allegations over the use of fungicides in Ecuador which have been made
    against PNB, and by extension against the Ministry and the Republic. .
    . . PNB hereby affirms that it is the intention of the Republic to waive
    sovereign immunity from jurisdiction with respect to the subject matter
    of this litigation.4
    The district court initially denied plaintiffs’ Motion to Strike, but reserved the right
    to reexamine the issue of PNB’s sovereign immunity.
    3
    R2-14 at 3, 4.
    4
    May 23, 1995 Reply to Pls.’ Mem. in Resp. to PNB’s Statement of Position, R2-39 at 8.
    4
    On June 13, 1995, the District Court granted plaintiffs’ Motions for
    Reconsideration, directing PNB to provide “convincing proof that the Republic of
    Ecuador has effected a valid waiver of its sovereign immunity for the purposes of the
    third, fourth and fifth-party complaints against PNB in these lawsuits.”5
    PNB then presented official documents purporting to waive immunity. The
    first, the June 16, 1995 affidavit of Edgar Terán, Ecuador’s Ambassador to the United
    States, stated in part that
    I respectfully waive PNB’s Sovereign Immunity on behalf of PNB and
    the Government of Ecuador on the following limited basis. Without
    waiving any other defense of law or fact to the claims asserted against it
    in this litigation, PNB hereby and for the purposes of these litigations
    only and in connection with the pending forum non conveniens motions
    (1) explicitly waives its immunity from the jurisdiction of this Court
    pursuant to 28 U.S.C. 1605(a)(i) and (2) consents to the exercise of
    personal jurisdiction by this Court over PNB.6
    Terán stated that the purpose of the waiver was to support a federal court forum non
    conveniens dismissal:
    The decision by the Ecuadorian Government to submit to the Court’s
    jurisdiction in connection with these cases was not made lightly but is a
    recognition of the fundamental seriousness with which the Ecuadorian
    Government defends its sovereignty over its environment and use of
    5
    Order Upon Pls.’ Mot. for Recons., and Directing Compliance with Provisional
    Consolidation Order, R3-59 at 2.
    6
    R3-64 Attach., at 1, ¶ 1.
    5
    natural resources. . . . According to Ecuadorian law, conditions relating
    to the environment . . . belong to the sovereignty of each state.7
    Plaintiffs questioned Ambassador Terán’s authority to waive sovereign immunity. At
    a hearing on June 26, the district judge asked several questions about who, under
    international and Ecuadorian law, was authorized to waive a country’s sovereign
    immunity. On June 27, 1995, the court entered another order directing the parties to
    supplement the record, stating that
    [g]iven the importance of this issue, the court has only one option. It
    must become informed of the relevant provisions of Ecuadoran law,
    determine precisely what is required for an effective waiver of sovereign
    immunity under that law, and examine the record to determine if there
    has been an effective waiver.8
    PNB submitted an Ecuadorian legal expert’s opinion that Ambassador Terán was
    authorized to waive sovereign immunity9 and an affidavit of Sixto Durán Ballén,
    President of the Republic of Ecuador, stating that
    3. Dr. Edgar Terán . . . has acted in the name of the Republic of Ecuador
    (and therefore of the National Banana Program).
    ...
    5. I . . . know what Ambassador Terán has already stated, and I ratif[]y
    his statement as regards the priority policy of the Republic of Ecuador
    7
    
    Id., ¶ 4
    .
    8
    Order Directing Parties to Supplement R., R4-74 at 1.
    9
    See R4-87 Ex. B.
    6
    is that these matters . . . should be decided within the Ecuadoran forum
    . . . .10
    In the meantime, plaintiffs submitted letters and affidavits of Ecuadorian legal
    experts and government officials claiming that (1) only the Attorney General of
    Ecuador was authorized to act in judicial matters, (2) the Ecuadorian Constitution did
    not allow anyone to waive Ecuador’s sovereign immunity, and (3) Terán had improper
    motives for waiving sovereign immunity.
    In an order dated August 28, 1995, the district court dismissed the complaints
    against PNB. The court found that PNB had not waived sovereign immunity because
    Ambassador Terán’s affidavit was “expressly limited to litigation of the forum non
    conveniens motion now pending”11 and President Durán Ballén’s affidavit was
    “similarly qualified.”12 These qualifications meant that “[n]o representative of the
    Republic of Ecuador ha[d] ever purported to waive the immunity of the Republic with
    respect to the third, fourth and fifth-party claims against PNB.”13 In the same order,
    the district court remanded the cases to the state court on the ground that without PNB
    as a party, it no longer had subject matter jurisdiction over the action.
    10
    
    Id.
     Ex. A, at 1 (emphasis omitted).
    11
    Aug. 28, 1995 Order, R5-97 at 3.
    12
    
    Id. at 4
    .
    13
    
    Id.
    7
    The defendants filed a Motion for Reconsideration and for Stay and a Motion
    to Amend. PNB made one more attempt to waive sovereign immunity, filing an
    affidavit of Ambassador Terán dated August 31, 1995, which stated that
    3.         In its decision, the Court stated that “[n]o representative of the
    Republic of Ecuador has ever purported to waive the immunity of
    the Republic with respect to the third, fourth and fifth party claims
    against PNB.”
    4.         I am surprised at the Court’s conclusion because the waiver
    described by the Court . . . is precisely what I intended to effect in
    my prior affidavits. I hereby reaffirm that intention and that
    waiver.14
    Plaintiffs, in response, submitted more evidence that Terán was not authorized to
    waive immunity. In an order dated October 12, 1995, the district court denied the
    defendants’ motions. Citing 
    28 U.S.C. § 1447
    (d), it held that, because it had already
    remanded the cases, it was without jurisdiction to review its August 28 order.
    Once the cases returned to Florida state court (with PNB no longer a party), the
    defendants again moved for a forum non conveniens dismissal. After the Florida trial
    court denied the motion, a Florida appeals court, relying on the recently decided case
    of Kinney Sys., Inc. v. Continental Ins. Co., 
    674 So. 2d 86
     (Fla. 1996), found that the
    courts of Ecuador were an adequate alternative forum for the cases and directed the
    trial court to dismiss them on forum non conveniens grounds. See Ciba-Geigy Ltd.
    14
    R5-99 Attach., at 1.
    8
    v. Fish Peddler, Inc., 
    691 So. 2d 1111
     (Fla. Dist. Ct. App. 1997), review denied, 
    699 So. 2d 1372
     (Fla. 1997). The trial court did so in October 1997. As the parties
    informed us at oral argument and in subsequent letter briefs, however, this may not
    be the end of the matter in the Florida courts. The Ecuadorian courts thus far have
    refused to accept jurisdiction over the cases; as a result, the Florida trial court has
    indicated that it may consider reinstating them.15
    Appellants ask us to reverse the district court’s August 28, 1995, dismissal of
    the complaints against PNB and to return the cases to federal court.
    II.   APPELLATE JURISDICTION
    Before addressing the question of whether PNB effectively waived sovereign
    immunity, we must determine whether we have jurisdiction to hear this appeal. We
    must address three questions: whether 
    28 U.S.C. § 1447
    (d) bars us from considering
    the appeal; whether the dismissal of the claims against PNB was a “final order” within
    the meaning of 
    28 U.S.C. § 1291
    ; and whether the appeal is moot. We conclude that
    none of these considerations leaves us without jurisdiction.16
    A.         Section 1447(d)’s Bar on Review of Remands
    15
    See Appellants’ Letter Br. dated Jan. 29, 1999 and Appellees’ Letter Br. dated Feb. 1,
    1999.
    16
    Because we have jurisdiction over this appeal, plaintiffs’ Motion for Attorneys’ Fees
    and Costs is without merit.
    9
    Section 1447(d), which states that “[a]n order remanding a case to the State
    court from which it was removed is not reviewable on appeal or otherwise,” generally
    bars a court of appeals from reviewing a district court’s order of remand. See
    Thermtron Prods., Inc. v. Hermansdorfer, 
    423 U.S. 336
    , 342-43, 
    96 S. Ct. 584
    , 589
    (1976); Florida Polk County v. Prison Health Servs., Inc., 
    170 F.3d 1081
    , 1083 (11th
    Cir. 1999); Glasser v. Amalgamated Workers Union Local 88, 
    806 F.2d 1539
    , 1540
    (11th Cir. 1986).
    Although section 1447(d) has exceptions that allow courts of appeals to review
    some orders of remand, none of them applies here. In Thermtron, 
    423 U.S. at 346
    , 
    96 S. Ct. at 590
    , for example, the Supreme Court held that section 1447(d) applies only
    to remands made on grounds authorized in 
    28 U.S.C. § 1447
    (c). Because section
    1447(c) authorizes the ground for remand here, lack of jurisdiction, the Thermtron
    exception does not apply. Another doctrine, known as the “matter of substantive law
    exception,” allows the courts of appeals to review those remands to state court that are
    based on determinations of the substantive rights of the parties. See Pelleport
    Investors, Inc. v. Budco Quality Theatres, Inc., 
    741 F.2d 273
    , 276-77 (9th Cir. 1984)
    (reviewing district court decision on enforceability of forum selection clause); Clorox
    Co. v. United States Dist. Court, 
    779 F.2d 517
    , 520 (9th Cir. 1985) (reviewing
    decision that defendant had waived right to remove case); see also Glasser, 
    806 F.2d 10
    at 1540 (“[T]he ‘matter of substantive law’ exception . . . permits appellate review of
    a district court remand order only where that order is based solely on a matter of
    substantive law.”). The “matter of substantive law exception” itself has an exception:
    It does not apply when “the substantive issue is intrinsic to the district court’s decision
    to remand for lack of subject matter jurisdiction.” Calderon v. Aerovias Nacionales,
    
    929 F.2d 599
    , 602 (11th Cir. 1991); see also Glasser, 806 F.2d at 1540. Because the
    district court’s order of remand in the cases before us did not resolve any substantive
    issues, the “matter of substantive law exception” does not allow us to review it.
    Section 1447(d) does not prevent us from reviewing the district court’s order
    dismissing the complaints against PNB, however, even though it was made at the
    same time as the order of remand, because of the limitation on section 1447(d)
    recognized in City of Waco v. United States Fidelity & Guar. Co., 
    293 U.S. 140
    , 143,
    
    55 S. Ct. 6
    , 7 (1934). In Waco, the defendant in a state court action “vouched in” a
    third-party defendant, who removed the case to federal district court on the ground of
    diversity. 
    Id. at 141
    , 
    55 S. Ct. at 6
    . The district court entered an order dismissing the
    third-party complaint and remanding the case to state court on the ground that as a
    result of the dismissal, diversity no longer existed. Because the district court order
    dismissed a claim before remanding the case to state court, and because the dismissal,
    by removing the third-party defendant from the state court action, would change the
    11
    shape of the lawsuit in a way that could not be reviewed on appeal in state court, the
    Supreme Court found that the dismissal (but not the remand) was reviewable on
    appeal.
    [I]f the District Court’s order stands the cross-action will be no part of
    the case which is remanded to the state court. . . . True, no appeal lies
    from the order of remand; but in logic and in fact the decree of dismissal
    preceded that of remand and was made by the District Court while it had
    control of the cause. Indisputably this order is the subject of an appeal;
    and, if not reversed or set aside, is conclusive upon the petitioner.
    
    Id. at 143
    , 
    55 S. Ct. at 7
    . The Waco doctrine allows us to review district court orders
    that lead to, but are separate from, orders of remand and have a conclusive effect upon
    the ensuing state court action. See, e.g., Beauclerc Lakes Condominium Ass’n v. City
    of Jacksonville, 
    115 F.3d 934
    , 935 (11th Cir. 1997) (reviewing dismissal of federal
    claim that led to remand); Armstrong v. Alabama Power Co., 
    667 F.2d 1385
    , 1387
    (11th Cir. 1982) (relying on Waco to review district court’s dismissal of United States
    as party prior to remand).
    Unlike the “matter of substantive law exception” to section 1447(d), which
    allows courts of appeals to review only those remand orders that are based on
    substantive determinations of law, the Waco doctrine allows us to review a district
    court’s jurisdictional determinations.17 This distinction exists because the “matter of
    17
    We suspect that the district court erroneously confused the Waco doctrine and the
    “matter of substantive law exception” when it stated that section 1447(d) precluded review of the
    order of dismissal because the order merely set the limits of federal court jurisdiction and did not
    12
    substantive law exception” and the Waco doctrine apply to different types of orders.
    The “matter of substantive law exception” applies to the review of a remand order
    itself, see Glasser, 806 F.2d at 1540 n.2; see also Regis Assocs. v. Rank Hotels
    (Management) Ltd., 
    894 F.2d 193
    , 194 (6th Cir. 1990), that determines the substantive
    issues of the case in a way that is conclusive because it is unreviewable by the state
    court. The reason that the “matter of substantive law exception” does not apply to a
    remand based on a district court’s jurisdictional findings is that these findings have
    no conclusive effect upon the state court action. See In re Loudermilch, 
    158 F.3d 1143
    , 1146-47 (11th Cir. 1998); Angelides v. Baylor College of Med., 
    117 F.3d 833
    ,
    836-38 (5th Cir. 1997) (distinguishing pre-remand decisions, such as denials of
    immunity, that are not “‘conclusive’ because, as jurisdictional decisions, they may be
    reviewed in the state court” from decisions that are not reviewable in state court).
    When a district court enters an order to do something other than remand (such
    as a dismissal of a claim or a party), and this order changes the contours of the state
    court action after remand, however, it does not matter whether the issue of law the
    court decided when it entered the order was jurisdictional or substantive; either way,
    the parties’ rights have been altered in a manner that the state court cannot revisit. See
    Carr v. American Red Cross, 
    17 F.3d 671
    , 675 (3d Cir. 1994) (reviewing order of
    “resolve independent substantive rights of the parties.” Oct. 12, 1995 Order, R6-113 at 4.
    13
    dismissal of defendant that led to remand because “the underlying dismissal order
    clearly had independent relevance in adjudging the rights of [the] parties . . . . That is,
    the ramifications of the dismissal order impacted on more than the issue of federal
    subject matter jurisdiction alone.”).
    Here, the district court dismissed the claims against PNB “in logic and in fact”
    before remanding the case, Waco, 
    293 U.S. at 143
    , 
    55 S. Ct. at 7
    , and this dismissal,
    like the Waco dismissal, altered the contours of the remanded state court action. As
    a result of the dismissal, appellants could no longer pursue their claims against PNB.
    The fact that, if defendants had filed new complaints against PNB in state court, PNB
    might have been able to effect another waiver there is irrelevant to our inquiry: the
    matter on appeal is not whether PNB could have waived its sovereign immunity at
    some point,18 but whether it did waive it before the district court in these cases.
    B.     Finality
    Having found that section 1447(d) does not bar our review, we must determine
    whether the district court’s order was an appealable final order under 
    28 U.S.C. § 18
    PNB now states that it intends to invoke sovereign immunity. If it did waive its
    sovereign immunity before the district court, however, that waiver remains effective: sovereign
    immunity, once waived, cannot be reasserted. See 
    28 U.S.C. § 1605
    (a)(1) (stating that a foreign
    state’s immunity remains waived “notwithstanding any withdrawal of the waiver which the
    foreign state may purport to effect except in accordance with the terms of the waiver”);
    Restatement (Third) of the Foreign Relations Law of the United States § 456(3) (1986) (“Under
    the law of the United States, a waiver of immunity . . . may not be withdrawn, except by consent
    of all parties to whom (or for whose benefit or protection) the waiver was made.”).
    14
    1291. Under the collateral order doctrine of Cohen v. Beneficial Indus. Loan Corp.,
    
    337 U.S. 541
    , 546, 
    69 S. Ct. 1221
    , 1225-26 (1949), we may review a decision that (1)
    conclusively determines a disputed question that is (2) important and completely
    separate from the merits of the action and is (3) effectively unreviewable on appeal
    from a final judgment. See Coopers & Lybrand v. Livesay, 
    437 U.S. 463
    , 468, 
    98 S. Ct. 2454
    , 2458 (1978). A dismissal of a claim or a party prior to remand is such an
    appealable collateral order, because “if not reversed or set aside it will remain
    conclusive upon the petitioner,” Katsaris v. United States, 
    684 F.2d 758
    , 761 (11th
    Cir. 1982); see also Carr, 
    17 F.3d at 675-77
     (holding that district court’s order
    dismissing co-defendant prior to remand was final under section 1291).
    C.     Mootness
    Finally, we must refuse to hear this appeal if the issue is moot. “A federal court
    has no authority to give opinions on moot questions or abstract propositions, or to
    declare principles or rules of law which cannot affect the matter in issue in the case
    before it.” John Roe, Inc. v. United States, 
    142 F.3d 1416
    , 1421 (11th Cir. 1998)
    (quotation omitted). A case is moot if “the parties lack a legally cognizable interest
    in the outcome.” County of Los Angeles v. Davis, 
    440 U.S. 625
    , 631, 
    99 S. Ct. 1379
    ,
    1383 (1979) (quotation omitted). Whether the parties here have a legally cognizable
    interest depends on what relief this court may grant: if intervening events have made
    15
    it “impossible for [us] to grant any effectual relief whatever to [the] prevailing party,”
    we must dismiss this appeal. John Roe, Inc., 142 F.3d at 1421 (quotation omitted).
    Thus, we must determine what relief we are authorized to grant if we find that the
    district court erred in dismissing PNB.
    If the parties still were actively litigating these cases in the Florida court system,
    we could follow Waco’s example and reverse the order of dismissal while leaving the
    remand order intact. See, e.g., Waco, 
    293 U.S. at 143-44
    , 
    55 S. Ct. at 7
     (“[R]eversal
    [of the dismissal order] cannot affect the order of remand, but it will at least, if the
    dismissal of the petitioner’s complaint was erroneous, remit the entire controversy,
    with the [erroneously dismissed third-party defendant] still a party, to the state court
    for such further proceedings as may be in accordance with law.”); see also Allen v.
    Ferguson, 
    791 F.2d 611
    , 616 (7th Cir. 1986) (reversing district court’s dismissal of
    defendant but stating that resulting “remand must remain undisturbed . . . . Because
    the dismissal is now a nullity, Ferguson remains a defendant in the action remanded
    to the Illinois state court.”).
    Because of the unusual procedural posture of the cases before us, however,
    unlike the Waco and Allen courts, we cannot correct the effects of an erroneous
    dismissal simply by reversing the order of dismissal. The remanded cases remain in
    an odd limbo, not quite in the Florida courts but not entirely out of them. Because of
    16
    a new statute that limits their jurisdiction, the Ecuadorian courts have dismissed most
    of plaintiffs’ Ecuadorian actions; plaintiffs’ pending appeals of these dismissals to
    higher courts in Ecuador appear to stand little chance of success. Although the Florida
    state court has indicated that it may consider reinstating the cases if the Ecuadorian
    courts continue to refuse to accept jurisdiction,19 we do not know if or when such a
    reinstatement might take place. A reversal of the dismissal that does not alter the
    order of remand cannot change the status of the Florida state court cases. Thus, we
    are able to grant “effectual relief,” John Roe, Inc., 142 F.3d at 1421 (quotation
    omitted)—and, therefore, the case is not moot—only if we are authorized to direct the
    district court to vacate its order of remand and return the case to federal court. We
    conclude that we are authorized to take this step.
    Although, at first glance, vacatur of the remand order appears to contradict the
    instruction of section 1447(d), the language of the statute and precedent from this and
    other circuits convince us that section 1447(d) does not bar us from vacating a remand
    when necessary to give effect to our judgment on another matter. Vacatur of a remand
    order does not necessarily constitute a forbidden “review” of the remand decision. To
    “review” an order, a court must do more than merely cancel it; it must, to some extent,
    19
    One of the reasons underlying the forum non conveniens dismissal of the case was the
    Florida appeals court’s finding that Ecuador was an adequate alternative forum with jurisdiction
    over the cases. See Ciba-Geigy Ltd. v. Fish Peddler, Inc., 
    691 So. 2d 1111
    , 1115-17 (Fla. Dist.
    Ct. App. 1997), review denied, 
    699 So. 2d 1372
     (Fla. 1997).
    17
    examine it and determine its merits. A “review” is a “reconsideration; second view
    or examination; revision; consideration for purposes of correction.” Black’s Law
    Dictionary 1186 (5th ed. 1979). A vacatur does not necessarily implicate this sort of
    examination. See, e.g., U.S. Bancorp Mortgage Co. v. Bonner Mall Partnership, 
    513 U.S. 18
    , 22-23, 
    115 S. Ct. 386
    , 390 (1994) (noting that “vacatur” may be available
    when “review” is precluded).
    If we order the district court to vacate an order for reasons that do not involve
    a reconsideration or examination of its merits, then we have not “reviewed” the order,
    and therefore have not fallen afoul of section 1447(d)’s prohibition on review. The
    Fifth Circuit recently followed this reasoning. In Tramonte v. Chrysler Corp., 
    136 F.3d 1025
     (5th Cir. 1998), after denying the appellant’s motion to recuse, the district
    court judge had remanded the case to state court for lack of subject matter jurisdiction.
    The court of appeals remanded to the district court for further consideration of the
    motion to recuse and vacated the order of remand, holding that vacatur did not
    constitute a “review” banned by section 1447(d).
    [Section] 1447(d) intends to insulate from appellate review a district
    court’s determinations as to its subject matter jurisdiction and
    compliance with remand procedures. . . . [W]e may reach and modify a
    remand order on appeal, so long as we do not engage in the review
    prohibited by § 1447(d).
    18
    Id. at 1027. “[V]acatur of the remand order,” the court held, was not “a review of the
    merits of that order,” but “an essentially ministerial task.” Id. at 1028. Similarly,
    vacating a remand to give effect to a judgment on another matter is an “essentially
    ministerial task,” rather than a review.
    This circuit has held that a court of appeals may vacate an order of remand
    when necessary to give effect to its judgments. In Flohr v. Mackovjak, 
    84 F.3d 386
    ,
    392 (11th Cir. 1996), this court reversed the district court’s denial of the defendant’s
    motion to substitute the United States as the party defendant in a negligence action,
    a denial that led to remand to state court. The court then explained that “in the
    exercise of our inherent power to issue such orders as may be necessary to effectuate
    relief in cases properly brought before this court, we can direct the district court to
    vacate its order of remand.” 
    Id. at 392
    . We noted that “[s]uch a directive would not
    constitute a review of the order of remand in violation of 
    28 U.S.C. § 1447
    (d), but
    rather a valid exercise of our power, if not our duty, to effectuate the relief granted to
    the appellant by today’s decision and avoid rendering an advisory opinion.” 
    Id.
     at 392
    n.9.20 In another case, we considered a district court order dismissing the federal
    government’s claim to an interpleaded fund and remanding the case to state court
    20
    The court found it unnecessary to take this step, but stated that if the U.S. Attorney did
    not remove the case to district court on behalf of the United States, it would “entertain a petition
    for a writ of mandamus to require the district court to vacate its [remand].” Flohr, 84 F.3d at
    392-93.
    19
    because the dismissal eradicated federal jurisdiction. After finding that the dismissal
    was improper, we vacated the order of remand and returned the case to the district
    court. See Katsaris, 
    684 F.2d at 763
    .
    Other circuits similarly have undertaken a Waco review of a decision preceding
    a remand, then reversed or vacated the remand itself. See, e.g., Carr, 
    17 F.3d 671
    (reversing order dismissing party and directing district court to vacate remand);
    Mitchell v. Carlson, 
    896 F.2d 128
     (5th Cir. 1990) (considering resubstitution decision
    that preceded remand order, then ordering district court to dismiss case); Kozera v.
    Spirito, 
    723 F.2d 1003
     (1st Cir. 1983) (reversing dismissal of third-party complaint
    and vacating remand order). In each of these cases, alteration of the remand order was
    necessary to give effect to a judgment that the order preceding the remand was error.
    See Beneficial Consumer Discount Co. v. Poltonowicz, 
    47 F.3d 91
    , 93 (3d Cir. 1995)
    (reviewing and affirming sovereign immunity decision that preceded remand, but
    stating that “§ 1447(d) bars our review of that portion of the district court’s order
    remanding this case to state court;” noting that case before it was distinguishable from
    Carr “because without [Carr’s] review [of the remand order], our decision overturning
    the district court’s order which triggered the remand would have been meaningless”).
    Were any other option available to us, we would avoid meddling with the order
    of remand. Ordinarily, when we pull a remanded case back into the federal courts, we
    20
    delay the progress of justice and give parties a tool and an incentive to engage in
    dilatory tactics. See Thermtron, 
    423 U.S. at 354-57
    , 
    96 S. Ct. at 594-96
     (Rehnquist,
    J., dissenting). In this action, however, should we decide that the district court erred
    in dismissing the claims against PNB, we have no choice but to vacate the remand.
    Because, as we have determined, we have the power to grant relief, this appeal is not
    moot.
    III.   WAIVER OF SOVEREIGN IMMUNITY
    Having established our jurisdiction, we proceed to the merits of the appeal. We
    hold that PNB waived its sovereign immunity and therefore is not immune from suit
    under the FSIA.
    We review de novo the district court’s determination that it lacked jurisdiction
    under the FSIA. See Honduras Aircraft Registry, Ltd. v. Government of Honduras,
    
    129 F.3d 543
    , 546 (11th Cir. 1997), cert. denied, __ U.S. __, 
    118 S. Ct. 2368
     (1998)
    (conducting de novo review of FSIA jurisdictional question); see also Export Group
    v. Reef Indus., Inc., 
    54 F.3d 1466
    , 1469 (9th Cir. 1995) (“[T]he existence of subject
    matter jurisdiction under the FSIA is a question of law subject to de novo review.”).
    We may set aside the district court’s factual determinations, however, only if they are
    clearly erroneous. See Honduras Aircraft Registry, 
    129 F.3d at 546
    . Where a party
    (here, defendants) has asserted facts suggesting that an exception to foreign sovereign
    21
    immunity exists, the party arguing for immunity (in this action, plaintiffs21) bears the
    burden of proving by a preponderance of the evidence that the exception does not
    apply. See Stena Rederi AB v. Comision de Contratos, 
    923 F.2d 380
    , 390 n.14 (5th
    Cir. 1991); Joseph v. Office of the Consulate General, 
    830 F.2d 1018
    , 1021 (9th Cir.
    1987).
    As a threshold matter, we conclude that the district court correctly determined
    that it was required to address the issue of PNB’s immunity, despite the fact that
    Ecuador did not raise the issue. Parties other than a foreign sovereign ordinarily lack
    standing to raise the defense of sovereign immunity. See Wilmington Trust v. United
    States Dist. Court, 
    934 F.2d 1026
    , 1033 (9th Cir. 1991) (“Congress intended requests
    for protection under the FSIA to originate from the foreign state party.”); Republic of
    the Philippines v. Marcos, 
    806 F.2d 344
    , 360 (2d Cir. 1986). When the court’s
    jurisdiction rests on the presence of the foreign sovereign, however, the court may
    address the issue independently. See Verlinden B.V. v. Central Bank of Nigeria, 
    461 U.S. 480
    , 493 n.20, 
    103 S. Ct. 1962
    , 1971 n.20 (1983); see also Coleman v. Alcolac,
    21
    The courts rarely have had occasion to consider the proper allocation of the burden of
    proof when a party other than the foreign sovereign argues that the sovereign is immune from
    suit. But see Didi v. Destra Shipping Co., No. 93-1851, slip op. at 3 (E.D. La. June 17, 1993) (in
    case similar to this one, where defendant filed third-party claim against foreign sovereign,
    foreign sovereign did not claim sovereign immunity and original plaintiff raised issue, defendant
    was required only to “assert some facts that would establish the exceptions” to sovereign
    immunity to prevent remand to state court) (quotation omitted).
    22
    Inc., 
    888 F. Supp. 1388
    , 1400 (S.D. Tex. 1995) (“[T]he district court must address the
    issue of sovereign immunity, even if . . . the foreign state has not even entered an
    appearance to assert the immunity defense.”). Because federal jurisdiction depended
    upon PNB’s presence, the fact that plaintiffs, rather than PNB, raised the issue of
    sovereign immunity did not foreclose the district court’s inquiry.
    “The FSIA regulates subject matter jurisdiction and provides the only basis for
    courts in this country to acquire jurisdiction over a foreign state. It provides that a
    foreign state is immune from the jurisdiction of the United States unless an FSIA
    statutory exemption is applicable.” Honduras Aircraft Registry, 
    129 F.3d at 546
    ; see
    also Saudi Arabia v. Nelson, 
    507 U.S. 349
    , 355, 
    113 S.Ct. 1471
    , 1476-77 (1993).
    Because PNB is an agency of the Republic of Ecuador, we treat it as a foreign state
    for purposes of the FSIA. See 
    28 U.S.C. § 1603
    (a), (b). The only exception to the
    FSIA that is relevant to this appeal22 is waiver of immunity under section 1605(a)(1),
    which provides that
    22
    A commonly litigated exception to the FSIA, the commercial activity exception, does
    not apply here. This exception to sovereign immunity applies to lawsuits
    based upon a commercial activity carried on in the United States by the foreign
    state; or upon an act performed in the United States in connection with a
    commercial activity of the foreign state elsewhere; or upon an act outside the
    territory of the United States in connection with a commercial activity of the
    foreign state elsewhere and that act causes a direct effect in the United States[.]
    
    28 U.S.C. § 1605
    (a)(2). Although PNB’s activities appear to have been “commercial” in nature,
    defendants do not claim that their effect within the United States was sufficient to bring them
    within section 1605(a)(2).
    23
    A foreign state shall not be immune from the jurisdiction of courts of the
    United States or of the States in any case—
    (1) in which the foreign state has waived its immunity
    either explicitly or by implication, notwithstanding any
    withdrawal of the waiver which the foreign state may
    purport to effect except in accordance with the terms of the
    waiver[.]
    
    28 U.S.C. § 1605
    (a).
    We must examine the communications from PNB’s lawyers and Ambassador
    Terán23 to determine if any of them constituted an express waiver24 of immunity.
    23
    President Durán Ballén’s affidavit did not purport to effect a waiver; it merely
    confirmed Ambassador Terán’s authority. See R4-87 Ex. A.
    24
    PNB did not waive its immunity by implication. The House Report on the FSIA gives
    three examples of an implied waiver:
    [T]he courts have found [implicit] waivers in cases where a foreign state has
    agreed to arbitration in another country or where a foreign state has agreed that
    the law of a particular country should govern a contract. An implicit waiver
    would also include a situation where a foreign state has filed a responsive
    pleading in an action without raising the defense of sovereign immunity.
    H.R. Rep. No. 94-1487, at 18 (1976), reprinted in 1976 U.S.C.C.A.N. 6604, 6617. The courts,
    loath to broaden the scope of the implied waiver provision, rarely have found that an action that
    does not fit one of the above three examples constitutes an implicit waiver. See Shapiro v.
    Republic of Bolivia, 
    930 F.2d 1013
    , 1017 (2d Cir. 1991) (“Federal courts have been virtually
    unanimous in holding that the implied waiver provision of Section 1605(a)(1) must be construed
    narrowly. . . . [The House Report’s] examples involve circumstances in which the waiver was
    unmistakable, and courts have been reluctant to find an implied waiver where the circumstances
    were not similarly unambiguous.”). PNB never filed a responsive pleading, and its other
    participation in the litigation, such as removing the case to federal court, filing statements of
    position, and joining the forum non conveniens motion, did not constitute an implicit waiver.
    See Rodriguez v. Transnave Inc., 
    8 F.3d 284
    , 287-90 (5th Cir. 1993) (finding no implicit waiver
    of sovereign immunity where foreign state made “voluntary appearance” in lawsuit in which it
    had not formally been served, removed case to federal court, and participated in discovery and
    trial preparation for two years).
    24
    A.     Statements in PNB’s May 1995 Court Documents
    PNB filed two statements of its lawyers with the district court that purported to
    waive sovereign immunity. Plaintiffs ask us to hold that these documents did not
    constitute valid waivers under section 1605(a)(1) because a document signed only by
    a private attorney never can serve to waive the immunity of the attorney’s sovereign
    client. Although we decline to adopt such a rule, we determine that, in this action,
    PNB’s lawyers failed to effect a waiver of sovereign immunity on behalf of the
    Republic.
    Congress, in enacting the FSIA, contemplated that a private attorney
    representing a foreign state could waive sovereign immunity implicitly by filing, on
    behalf of the state, a responsive pleading that did not raise the defense. See H.R. Rep.
    No. 94-1487, at 18 (1976), reprinted in 1976 U.S.C.C.A.N. 6604, 6617; see also supra
    note 24. It follows that Congress contemplated that a state’s legal representative could
    use a different tool, an express waiver of the state’s immunity from a legal proceeding,
    to accomplish the same goal. This and other courts have given effect to private
    attorneys’ express waivers of the sovereign immunity of their clients. See Hercaire
    Int’l, Inc. v. Argentina, 
    821 F.2d 559
    , 561, 563 (11th Cir. 1987) (treating statement
    included in answer and counterclaim as an “express waiver”); Sotheby’s, Inc. v.
    Garcia, 
    802 F. Supp. 1058
    , 1062-63 (S.D.N.Y. 1992) (finding that a memorandum of
    25
    law and affirmation of counsel validly expressly waived Republic of the Philippines’
    sovereign immunity); see also Rich v. Naviera Vacuba, S.A., 
    197 F. Supp. 710
    , 721-
    22 (E.D. Va.), aff’d, 
    295 F.2d 24
     (4th Cir. 1961) (pre-FSIA case rejecting argument
    that attorney’s waiver of a sovereign’s immunity “must be supported by documentary
    evidence” and affording full faith and credit to judgment entered after an attorney
    waived a foreign state’s immunity by entering a general appearance on behalf of the
    sovereign).25
    Assuming that PNB’s attorneys could waive sovereign immunity on behalf of
    Ecuador, they did not do so in the May 1995 statements. An express waiver under
    section 1605(a)(1) must give a “clear, complete, unambiguous, and unmistakable”
    manifestation of the sovereign’s intent to waive its immunity. Aguinda v. Texaco,
    Inc., 
    175 F.R.D. 50
    , 52 (S.D.N.Y. 1997) (collecting cases), vacated on other grounds
    sub nom. Jota v. Texaco, Inc., 
    157 F.3d 153
     (2d Cir. 1998); see also Libra Bank Ltd.
    v. Banco Nacional de Costa Rica, S.A., 
    676 F.2d 47
    , 49 (2d Cir. 1982) (holding that
    25
    Plaintiffs cite United States of Mexico v. Rask, 
    4 P.2d 981
    , 989 (Cal. Dist. Ct. App.
    1931), which held that private attorneys could not assert a claim of immunity on behalf of a
    foreign sovereign. Even if Rask’s reasoning survived the enactment of the FSIA, it does not
    apply here, where private attorneys attempted not to assert sovereign immunity, but to waive it.
    We see no inconsistency in restricting the methods by which a foreign country can claim
    sovereign immunity more tightly than the methods by which the country gives up that immunity.
    See Maritime Ventures Int’l, Inc. v. Caribbean Trading & Fidelity, Ltd., 
    722 F. Supp. 1032
    , 1038
    (S.D.N.Y. 1989) (“Congress . . . intended to restrict corporations and individuals more
    stringently from invoking the protective veil of sovereign immunity than it did to limit their
    ability to waive immunity on behalf of the government for whom they served as a private
    agent.”).
    26
    explicit waiver must show “clear and unambiguous intent” to waive immunity). The
    first document stated that PNB waived immunity “pursuant to 
    28 U.S.C. § 1605
    (a)(1),” but that “[t]his waiver of immunity and consent to jurisdiction is made
    solely on behalf of Programa Nacional de Banano and shall not be deemed to be a
    waiver of any immunities, rights or defenses applicable to other governmental
    department[s] of the Republic of Ecuador or to the Republic of Ecuador itself.”26
    Plaintiffs had presented evidence that because PNB was not a “juridical person” that
    could be sued under Ecuadorian law,27 the Republic of Ecuador would be required to
    “consent[], by extension, to suit in PNB’s behalf.”28 This waiver, limited to PNB, was
    not, therefore, “complete.” Aguinda, 175 F.R.D. at 52. The second document stated
    that “[t]he Republic of Ecuador . . . ha[s] made it clear that any immunity from
    jurisdiction has been waived . . . . PNB hereby affirms that it is the intention of the
    Republic to waive sovereign immunity . . . .”29 This statement is not a “clear,
    complete, unambiguous, and unmistakable” waiver. Aguinda, 175 F.R.D. at 52. Read
    literally, it does not purport to waive Ecuador’s immunity, but merely states the PNB
    26
    R2-14 at 3-4.
    27
    May 31, 1995 Omnibus Order, R3-48 at 5.
    28
    Id. at 6.
    29
    R2-39 at 8.
    27
    lawyers’ opinion that Ecuador either had filed an explicit waiver of immunity or
    planned to file one at some point. An express waiver of immunity must be more exact
    than this.30
    B.         The June 1995 Terán Affidavit
    The district court found that Ambassador Terán’s June 1995 affidavit did not
    effect a valid waiver of sovereign immunity because its language was not sufficiently
    complete. After remanding the case, the court also suggested that it was not
    convinced that Terán had the authority to waive Ecuador’s immunity before the courts
    of the United States. We disagree with both conclusions.
    Terán stated that PNB and the Government of Ecuador waived PNB’s immunity
    “[w]ithout waiving any other defense of law or fact to the claims asserted against it
    . . . for the purposes of these litigations only and in connection with the pending forum
    non conveniens motions.”31 The district court found that Terán’s language was
    “expressly limited to litigation of the forum non conveniens motion now pending.”32
    This holding was error; although Terán could have chosen his words more carefully,
    30
    Plaintiffs also claim that these waivers were invalid because PNB had not hired the
    attorneys who filed the statements. Because we hold that the waivers were insufficient on other
    grounds, we need not reach this argument.
    31
    R3-64 Attach., at 1, ¶ 3.
    32
    R5-97 at 3.
    28
    the affidavit waives immunity completely and unambiguously, if somewhat
    awkwardly. The word “only,” in the phrase “for the purposes of these litigations only
    and in connection with the pending forum non conveniens motions,” modifies the
    expression “these litigations,” but not the words “in connection.” Although we rely
    on Terán’s June 1995 affidavit to find a waiver of sovereign immunity, we note that
    his August 1995 affidavit, which states that he intended his earlier affidavit to “waive
    the immunity of the Republic with respect to the third, fourth and fifth party claims
    against PNB,”33 confirms our understanding of the June 1995 waiver.
    Terán’s phrase “in connection with the pending forum non conveniens
    motions,” which the district court read as a limitation on the waiver of immunity,
    actually shed light on his reasons for filing the waiver. Terán’s affidavit went on to
    explain that the Republic of Ecuador believed that the cases should be litigated in
    Ecuador. The affidavit urged the court to dismiss the actions on the ground of forum
    non conveniens, suggesting that Terán’s purpose was to keep the case in federal court,
    where a forum non conveniens dismissal might be more likely. The fact that the
    waiver may have been a tactical move does not alter our analysis. Nothing in the
    FSIA prohibits a foreign sovereign from effecting a waiver of immunity for strategic
    purposes. The courts need not approve the reasons underlying a foreign state’s waiver
    33
    R5-99 Attach., at 1.
    29
    of its immunity; indeed, to second-guess motivations and litigation strategy might
    signal a disrespect for a sovereign’s autonomy that is at odds with the policies
    underlying the FSIA.
    The district court stated that one of the reasons for its finding that Terán had not
    explicitly waived sovereign immunity was that “little evidence existed to prove who
    in the Republic of Ecuador . . . had the authority to waive immunity.”34 To reach this
    conclusion, the court conducted an inquiry into the law of Ecuador, attempting to
    “become informed of the relevant provisions of Ecuadoran law [and] determine
    precisely what is required for an effective waiver of sovereign immunity under that
    law.”35 Although we commend this diligent effort to resolve the waiver issue
    correctly, we conclude that the district court should have accepted Terán’s authority
    to waive sovereign immunity on behalf of Ecuador.
    Neither the FSIA nor its legislative history clearly states whether federal or state
    law controls questions relating to the authority of a person who purports to waive the
    immunity of a foreign sovereign under the FSIA. Because the FSIA “was not
    intended to affect the substantive law determining the liability of a foreign state or
    instrumentality,” First Nat’l City Bank v. Banco Para el Comercio Exterior, 
    462 U.S. 34
    Oct. 12, 1995 Order, R6-113 at 2.
    35
    Order Directing Parties to Supplement R., R4-74 at 1.
    30
    611, 620, 
    103 S. Ct. 2591
    , 2597 (1983), “where state law provides a rule of liability
    governing private individuals, the FSIA requires the application of that rule to foreign
    states in like circumstances,” 
    id.
     at 622 n.11, 103 S. Ct. at 2598 n.11.                         The
    effectiveness of an express or implied waiver under section 1605(a)(1) is not a
    question of liability, however, and therefore is governed by a uniform federal rule.
    “When it enacted the FSIA, Congress expressly acknowledged ‘the importance of
    developing a uniform body of law’ concerning the amenability of a foreign sovereign
    to suit in the United States Courts.” Id., 103 S. Ct. at 2598 n.11. Just as federal courts
    apply a federal standard to determinations of the scope of an express waiver, see
    Hercaire, 
    821 F.2d at 563-65
    , and of the existence of an implied waiver, see Cabiri v.
    Republic of Ghana, 
    165 F.3d 193
    , 201-03 (2d Cir. 1999), petition for cert. filed (U.S.
    Apr. 26, 1999) (No. 98-4722), we apply federal law to the question of whether a
    waiver has been effected by one with the authority to do so.36
    36
    Although some courts have applied state law when addressing whether an exception to
    sovereign immunity exists under the FSIA, their inquiries usually involve the commercial
    activities exception set forth in section 1605(a)(2) or the tortious activities exception set forth in
    section 1605(a)(5). See, e.g., Randolph v. Budget Rent-A-Car, 
    97 F.3d 319
    , 325 (9th Cir. 1996)
    (applying forum state’s law to determine whether alleged tortfeasor was employee of foreign
    sovereign whose activities therefore fell within section 1605(a)(5)); First Fidelity Bank, N.A., v.
    Antigua & Barbuda—Permanent Mission, 
    877 F.2d 189
    , 194-96 & n.3 (2d Cir. 1989) (assuming
    without deciding that state law applies to determination of whether ambassador’s borrowing of
    money constituted Antigua’s commercial activity, as well as to waiver inquiry). But see
    Foremost-McKesson, Inc. v. Islamic Republic of Iran, 
    905 F.2d 438
    , 452 (D.C. Cir. 1990)
    (applying federal law to commercial activities exception inquiry). To determine the applicability
    of one of these exceptions, a court must grapple with the substantive question of whether the
    foreign sovereign is liable for the actions of its agent: “the court must answer the initial question
    31
    Our interpretation of the FSIA, the Congressional policies underlying that
    statute, and other concerns that arise in cases relating to foreign affairs lead us to
    conclude that when, as here, a duly accredited37 head of a diplomatic mission (such
    as an ambassador)38 files a waiver of his or her sovereign’s immunity in a judicial
    proceeding, the court should assume that the sovereign has authorized the waiver
    absent extraordinary circumstances.
    We may look to international law as a guide to the meaning of the FSIA’s
    provisions. We find the FSIA particularly amenable to interpretation in light of the
    law of nations for two reasons. First, Congress intended international law to inform
    the courts in their reading of the statute’s provisions. Prior to enactment of the FSIA,
    the U.S. State Department usually determined whether a foreign sovereign would be
    immune from suit in a U.S. court. See Verlinden, 
    461 U.S. at 486-87
    , 103 S. Ct. at
    1968. State Department policy on sovereign immunity generally reflected customary
    regarding the attribution of liability before it can find that it has subject matter jurisdiction over
    the foreign state pursuant to the FSIA.” Sandra Engle, Note, Choosing Law for Attributing
    Liability Under the Foreign Sovereign Immunities Act: A Proposal for Uniformity, 15 Fordham
    Int’l L.J. 1060, 1076 (1992). A section 1605(a)(1) waiver inquiry, on the other hand, does not
    require the court to determine the extent or existence of the sovereign’s liability; the court need
    only decide the preliminary question of whether the sovereign is amenable to suit. Cases
    applying state law to the commercial activities and tortious activities exceptions therefore do not
    apply to the issue before us.
    37
    No party contends that Terán was not duly accredited.
    38
    We use the terms “ambassador” and “diplomatic representative” interchangeably.
    32
    international law. See Stephens v. National Distillers and Chem. Corp., 
    69 F.3d 1226
    ,
    1233 (2d Cir. 1995). The passage of the FSIA did not extinguish international law’s
    relevance to sovereign immunity inquiries in the United States:
    The FSIA was enacted not so much to change the rules as to “transfer the
    determination of sovereign immunity from the executive branch to the
    judicial branch . . . .” In transferring this responsibility, the FSIA was
    primarily codifying pre-existing international and federal common law.
    
    Id. at 1234
     (quoting H.R. Rep. No. 94-1487, at 7 (1976), reprinted in 1976
    U.S.C.C.A.N. 6604, 6606). Congress, therefore, indicated that courts should look to
    international law when interpreting the FSIA’s terms. See H.R. Rep. No. 94-1487, at
    7 (1976), reprinted in 1976 U.S.C.C.A.N. 6604, 6605 (noting that FSIA “would codify
    the so-called ‘restrictive’ principle of sovereign immunity, as presently recognized in
    international law”); 
    id. at 14
    , 1976 U.S.C.C.A.N. at 6613 (“[T]he central premise of
    the bill [is that] decisions on claims by foreign states to sovereign immunity are best
    made by the judiciary on the basis of a statutory regime which incorporates standards
    recognized under international law.”); see also In re Estate of Ferdinand E. Marcos
    Human Rights Litig., 
    978 F.2d 493
    , 497-98 (9th Cir. 1992) (“Congress intended the
    FSIA to be consistent with international law . . . .”); West v. Multibanco Comermex,
    S.A., 
    807 F.2d 820
    , 831 n.10 (9th Cir. 1987) (“It is appropriate to look to international
    law when determining whether [an action] constitutes a ‘taking’ for purposes of
    FSIA.”); Texas Trading & Milling Corp. v. Federal Republic of Nigeria, 
    647 F.2d 33
    300, 310 (2d Cir. 1981) (“[T]he [FSIA’s] drafters seem to have intended rather
    generally to bring American sovereign immunity practice into line with that of other
    nations.”).
    Second, the FSIA’s purposes included “promot[ing] harmonious international
    relations,” Peré v. Nuovo Pignone, Inc., 
    150 F.3d 477
    , 480 (5th Cir. 1998), cert.
    denied, __ U.S. __, 
    119 S. Ct. 1033
     (1999), and according foreign sovereigns
    treatment in U.S. courts that is similar to the treatment the United States would prefer
    to receive in foreign courts, see Williams v. Shipping Corp. of India, 
    489 F. Supp. 526
    , 528 (E.D. Va. 1980), aff’d, 
    653 F.2d 875
     (4th Cir. 1981) (“In effect, a foreign
    nation is being accorded the . . . type of reciprocal immunity we would like to be
    accorded in a foreign court.”); cf. H.R. Rep. No. 94-1487, at 29-30 (1976), reprinted
    in 1976 U.S.C.C.A.N. 6604, 6628-29 (noting that goal of an FSIA provision is to
    prevent unfavorable treatment of U.S. corporations in courts abroad). We give effect
    to these Congressional purposes by considering the potential impact of our FSIA
    interpretations on foreign litigation involving the United States and its interests. See
    Persinger v. Islamic Republic of Iran, 
    729 F.2d 835
    , 841 (D.C. Cir. 1984) (“[S]ince
    some foreign states base their sovereign immunity decisions on reciprocity, or parity
    of reasoning, it is possible that a decision to exercise jurisdiction in this case would
    subject the United States to suits abroad . . . .”). Therefore, we interpret the issue
    34
    before us in light of customary international law, which generally is accepted abroad
    and is more easily ascertainable than divergent local laws.39
    We look to a number of sources to ascertain principles of international law,
    including international conventions, international customs, treatises, and judicial
    decisions rendered in this and other countries. See Malcolm N. Shaw, International
    Law 59 (1991) (citing article 38(1) of the Statute of the International Court of Justice);
    Siderman de Blake v. Republic of Argentina, 
    965 F.2d 699
    , 715 (9th Cir. 1992) (“[I]n
    ascertaining and administering customary international law, courts should resort to
    ‘the customs and usages of civilized nations, and, as evidence of these, to the works
    of jurists and commentators.’”) (quoting The Paquete Habana, 
    175 U.S. 677
    , 700, 
    20 S. Ct. 290
    , 299 (1900)). These sources show that a sovereign’s chief diplomatic
    representative to a foreign nation possesses an extraordinary role and powers.
    “[P]eoples of all nations from ancient times have recognized the status of diplomatic
    agents.” Vienna Convention on Diplomatic Relations, Apr. 18, 1961, preamble, 23
    U.S.T. 3227, 500 U.N.T.S. 95. The ambassador performs several important functions
    on behalf of the state that has sent him or her to another country, including
    39
    Referring to international law addresses the concerns of the district judge, who
    suggested at an evidentiary hearing that applying U.S. law to the waivers of a foreign
    sovereign’s agent might encourage foreign sovereigns to apply their own law to determine which
    representatives of the United States were entitled to waive this country’s sovereign immunity.
    See Tr. of June 26, 1995, Hr’g, R7 at 39-40, 45-47.
    35
    “representing the sending State in the receiving State[,] protecting in the receiving
    State the interests of the sending State and of its nationals, within the limits permitted
    by international law,” 
    id.
     art. 3, and “act[ing] as representative of the sending State to
    any international organization,” 
    id.
     art. 5(3).
    Under international law, ambassadors have broad powers to bind the countries
    they represent. “In virtue of their functions and without having to produce full
    powers, the following are considered as representing their State: . . . (b) heads of
    diplomatic missions, for the purpose of adopting the text of a treaty between the
    accrediting State and the State to which they are accredited . . . .” Vienna Convention
    on the Law of Treaties, opened for signature May 23, 1969, art. 7(2), 1155 U.N.T.S.
    331;40 see also Restatement (Third) of the Foreign Relations Law of the United States
    § 311 cmt. b (1986). Some countries have codified a rule that a diplomatic
    representative always has authority to waive sovereign immunity on behalf of his or
    her sovereign. See, e.g., Foreign Sovereign Immunities Act, 1985, ch. 31(5) (Austl.)
    (“In addition to any other person who has authority to waive [immunity] on behalf of
    a foreign State . . . the person for the time being performing the functions of the head
    40
    “Although the United States is not a party to the Vienna Convention, it regards the
    substantive provisions of the Vienna Convention as codifying the international law of treaties.”
    Kreimerman v. Casa Veerkamp, S.A. de C.V., 
    22 F.3d 634
    , 638 n.9 (5th Cir. 1994) (citing
    Restatement (Third) of the Foreign Relations Law of the United States pt. III, Introductory Note
    (1986)).
    36
    of the State’s diplomatic mission in Australia has that authority.”); State Immunity
    Act, 1978, § 2(7) (U.K.) (same).
    International courts traditionally have assumed that an ambassador’s powers
    include the authority to present his or her country’s position before foreign tribunals.
    A country’s diplomatic representative may, for example, sign an application to initiate
    proceedings before the International Court of Justice on the country’s behalf; unlike
    other agents, the diplomatic representative does not need to authenticate his or her
    signature. See I.C.J. Rules of Court, art. 38 (“If the application bears the signature of
    someone other than [the] diplomatic representative [to the forum country], the
    signature must be authenticated by the latter or by the competent authority of the
    applicant’s foreign ministry.”). The United Nation’s International Law Commission
    has explained that courts should assume the authority of an ambassador to effect a
    waiver of diplomatic immunity.41
    In [a draft of the waiver provision of the Vienna Convention on
    Diplomatic Relations], paragraph 2 read as follows: “In criminal
    proceedings, waiver must always be effected expressly by the
    Government of the sending State.” The Commission decided to delete
    the phrase “by the Government of the sending State”, because it was
    41
    Diplomatic immunity, like sovereign immunity, belongs to the foreign state and may
    only be waived by the state itself. Compare FSIA, 
    28 U.S.C. § 1605
    (a) (“A foreign state shall
    not be immune . . . in any case . . . in which the foreign state has waived its immunity . . . .”) with
    Vienna Convention on Diplomatic Relations, Apr. 18, 1961, art. 32(1), 23 U.S.T. 3227, 500
    U.N.T.S. 95 (“The immunity from jurisdiction of diplomatic agents . . . may be waived by the
    sending State.”).
    37
    open to the misinterpretation that the communication of the waiver
    should actually emanate from the Government of the sending State. As
    was pointed out, however, the head of the mission is the representative
    of his Government, and when he communicates a waiver of immunity
    the courts of the receiving State must accept it as a declaration of the
    Government of the sending State. In the new text, the question of the
    authority of the head of the mission to make the declaration is not dealt
    with, for this is an internal question of concern only to the sending State
    and to the head of the mission.
    Commentary of the U.N. International Law Commission, [1958] 2 Y.B. Int’l L.
    Comm’n 78, 99, reprinted in 7 Whiteman Digest § 43, at 422 (emphasis added).
    The opinions of our own courts similarly reflect the presumption that an
    ambassador has authority to represent his or her state in legal proceedings.
    It has been recognized that diplomatic agents of one state, while in
    another, may commence and maintain actions on behalf of their state
    while they are recognized as such. . . . Proof of the agency or of the
    diplomat is dependent entirely upon the political fact of the recognition
    by the political department of the government.
    Lehigh Valley R.R. Co. v. State of Russia, 
    21 F.2d 396
    , 400 (2d Cir. 1927) (citation
    omitted); cf. also The Sao Vicente, 
    260 U.S. 151
    , 154-55, 
    43 S. Ct. 15
    , 16 (1922); The
    Anne, 16 U.S. (3 Wheat.) 435, 445-46 (1818) (citing international law); Jota, 
    157 F.3d at 162-63
     (noting “the traditional authority of ambassadors to represent the state’s
    position before foreign courts”); Agency of Canadian Car & Foundry Co. v. American
    Can Co., 
    258 F. 363
    , 368-69 (2d Cir. 1919) (holding that certificate of Russian
    ambassador “must be regarded . . . as an authoritative representation by the Russian
    38
    government . . . and as such binding and conclusive in the courts of the United States
    against that government”) (citing international law); cf. Gerritsen v. Escobar y
    Cordova, 
    688 F. Supp. 556
    , 558 (C.D. Cal. 1988) (“It has long been the practice in the
    federal courts that ambassadors may represent their states in claims against them.”).
    This authority includes the power to assert sovereign immunity, see, e.g., Compania
    Espanola de Navegacion Maritima, S.A. v. The Navemar, 
    303 U.S. 68
    , 74-75, 
    58 S. Ct. 432
    , 435 (1938) (holding that ambassador’s application to claim immunity of
    vessel from suit “was properly entertained by the District Court”), and, it follows, to
    waive it, see Maritime Ventures Int’l, Inc. v. Caribbean Trading & Fidelity, Ltd., 
    722 F. Supp. 1032
    , 1038 (S.D.N.Y. 1989) (noting Congressional intent to restrict
    invocations of sovereign immunity more tightly than waivers); cf. Fatemi v. United
    States, 
    192 A.2d 525
    , 528 (D.C. Ct. App. 1963) (holding that “[f]rom the point of
    view of the police and the courts of the United States, the country to which he is
    accredited,” the actions of a minister of the Iranian Embassy who purported to waive
    the Embassy’s inviolability by asking local police to enter the Embassy and arrest
    trespassers “must be regarded as legal”).
    The U.S., foreign and international courts’ custom of presuming that an
    ambassador has authority to speak for his or her country probably stems from
    practical needs. A state’s embassy ordinarily is more accessible than members of its
    39
    home government to litigants and courts in a forum state. Perhaps for this reason, the
    transmission of a state’s decision whether to invoke or claim immunity is one of the
    traditional functions of an embassy.
    Waivers of diplomatic immunity have been accomplished in a variety of
    ways . . . . [W]aivers of immunity have been formally communicated by
    the Ambassador of the mission concerned to the Department of State. .
    . . In U.S. practice, waivers of immunity are only made by the chiefs of
    mission of our diplomatic missions abroad, pursuant to an authorization
    from the Department of State.
    Vienna Convention on Diplomatic Relations: Hearing Before the Subcomm. of the
    Senate Comm. on Foreign Relations, 89th Cong. 75 (1965) (questions and answers
    supplied by the State Department); see Sea Hunt, Inc. v. Unidentified, Shipwrecked,
    Vessel or Vessels, 
    22 F. Supp. 2d 521
    , 524 (E.D. Va. 1998) (noting that historically,
    ambassadors could appear before U.S. courts to claim sovereign immunity).
    We find additional support for our holding that a court usually should accept
    an ambassador’s authority to waive immunity in the Congressional intent underlying
    the FSIA. Responding to problems created by the political nature of sovereign
    immunity inquiries, Congress passed the FSIA in order to create uniform and
    predictable standards for litigation involving foreign governments. See Verlinden,
    
    461 U.S. at 488
    , 103 S. Ct. at 1968 (stating that FSIA was passed “in order to free the
    Government from the case-by-case diplomatic pressures, to clarify the governing
    standards, and to assure litigants that decisions are made on purely legal grounds and
    40
    under procedures that insure due process”) (internal quotation and punctuation
    omitted); In re Air Crash Disaster Near Roselawn, 
    96 F.3d 932
    , 937 (7th Cir. 1996).
    The statutory scheme benefits foreign sovereigns by giving them notice of when they
    will be subject to the jurisdiction of the U.S. courts and by allowing them to elect to
    litigate in the United States by effecting a waiver under section 1605(a)(1). It likewise
    benefits those who do business with foreign sovereigns by providing predictable and
    uniform methods for establishing jurisdiction in the event of a dispute.
    Requiring the courts to look to a sovereign’s local law to determine the
    authority of any agent who purports to waive sovereign immunity, even if that agent
    is an ambassador, would hinder the goals of the FSIA and its waiver provision. Such
    a rule at best would create a roadblock to all FSIA actions, requiring lengthy,
    unpredictable, and frequently inconclusive inquiries into conflicting interpretations
    of foreign law (such as that undertaken by the district court in this action). At worst,
    both foreign sovereigns and the parties involved in litigation with them could abuse
    such a rule. The foreign state would have “the opportunity of raising immunity
    perhaps even after it has unsuccessfully defended on the merits.” George Kahale III,
    State Loan Transactions: Foreign Law Restrictions on Waivers of Immunity and
    Submissions to Jurisdiction, 37 Bus. Law. 1549, 1561 n.70 (1982). Thus, it could
    “reap the benefits of our courts while avoiding the obligations of international law.”
    41
    First Nat’l City Bank, 
    462 U.S. at 634
    , 103 S. Ct. at 2603. When a foreign state
    wishes to participate in a lawsuit and agrees to do so by explicit or implicit waiver, on
    the other hand, a party opposed to its presence might be able to persuade a court to
    “deny it the opportunity to appear and defend on the ground that it is prohibited from
    doing so under its own law.” Kahale, State Loan Transactions, 37 Bus. Law. at 1561
    n.70. Both results would undercut the utility of the waiver provision of the FSIA.
    Finally, a rule that a court always must investigate an agent’s authority to waive
    immunity would increase the number of “potentially intrusive and resented inquiries
    of foreign governments.”           First Fidelity Bank, N.A., v. Antigua &
    Barbuda—Permanent Mission, 
    877 F.2d 189
    , 199 (2d Cir. 1989) (Newman, J.,
    dissenting).
    Other concerns, uniquely related to the courts’ role in the sensitive area of
    international relations, mitigate against questioning an ambassador’s representations
    on behalf of his or her country before the courts. A judicial inquiry into a foreign
    ambassador’s authority to perform traditional diplomatic functions can infringe upon
    the authority of our own executive and legislative branches to manage the foreign
    relations of the United States.
    Who is the sovereign . . . of a country is a question for the political
    departments of the government. It is not a judicial question. . . . In the
    same way the question who represents and acts for a foreign sovereign
    or nation in its relations with the United States is determined, not by the
    42
    judicial department, but exclusively by the political branch of the
    government.
    Agency of Canadian Car, 258 F. at 368. See also Lehigh Valley, 
    21 F.2d at 399-400
    ;
    Republic of China v. Pang-Tsu Mow, 
    101 F. Supp. 646
    , 649 (D.D.C. 1951), aff’d in
    part, appeal dismissed in part, 
    201 F.2d 195
     (D.C. Cir. 1952) (“This Court cannot
    entertain the statement of a citizen of a foreign country . . . that the ambassador is not
    authorized to act as he has when the State Department has certified that person, as the
    recognized ambassador to this country.”). Under certain circumstances, a foray into
    foreign law to determine whether a diplomatic representative has acted in accordance
    with its dictates also could implicate the act of state doctrine, which “limits, for
    prudential rather than jurisdictional reasons, the courts in this country from inquiring
    into the validity of a recognized foreign sovereign’s public acts committed within its
    own territory.” Honduras Aircraft Registry, 
    129 F.3d at
    550 (citing Banco Nacional
    de Cuba v. Sabbatino, 
    376 U.S. 398
    , 401, 
    84 S. Ct. 923
    , 926 (1964)).
    We do not hold that the courts should deem an ambassador to be authorized to
    waive a sovereign’s immunity under all circumstances; an ambassador may so clearly
    lack authority that his or her representations to a court do not bind the sovereign. In
    First Fidelity, 877 F.2d at 191, the Second Circuit held that a loan agreement and
    consent order executed by an ambassador to the United Nations would be effective
    only if the ambassador “possessed the apparent authority to borrow the money and to
    43
    waive Antigua’s sovereign immunity.” Id. at 193.42 Our review of international law
    supports the conclusion that an ambassador’s statements may so plainly contradict the
    position of his sovereign that they do not bind the sovereign. In Legal Status of
    Eastern Greenland (Den. v. Nor.), 1933 P.C.I.J. (ser. A/B) No. 43, at 54-64 (April 5,
    1933), the Permanent Court of International Justice held that the fact that a few Danish
    diplomats used a certain term when negotiating a territorial dispute did not bind
    Denmark to that term, because “the relevant correspondence as a whole showed that
    in fact the Danish Government adopted uniformly the [contrary] view.” 6 Lauterpacht
    Digest at 102 (analyzing Eastern Greenland). See also Restatement (Third) of Foreign
    Relations § 311, reporters’ note 4 (stating that in the context of international
    agreements, “a state is bound by apparent authority where lack of authority is not
    obvious to outside parties”).        Accordingly, we hold that, under the FSIA, courts
    should assume that an ambassador possesses the authority to appear before them and
    waive sovereign immunity absent compelling evidence making it “obvious” that he
    or she does not.
    42
    We, unlike the First Fidelity court, do not conduct a traditional apparent authority
    inquiry because a finding of apparent authority requires reliance, which will rarely exist when a
    court first considers an explicit waiver made in the course of judicial proceedings. See
    Restatement (Second) of Agency § 8 cmt. d (1958). Although the First Fidelity court analyzed
    the waiver under state agency law, rather than the federal and international law principles that
    we discuss above, the rule it arrived at parallels ours: courts should accept ambassadors’
    authority absent “obvious” evidence that they lack it. First Fidelity, 877 F.2d at 192.
    44
    We see no evidence in this action making it “obvious” that Terán lacked
    authority to waive Ecuador’s sovereign immunity. First, filing a court document on
    Ecuador’s behalf was the type of task a diplomat traditionally performs on behalf of
    his nation, rather than a commercial transaction that Terán might have entered for his
    own purposes. The nature of Terán’s activities distinguishes these cases from First
    Fidelity, in which an ambassador borrowed funds (ostensibly to pay for renovations
    to Antigua’s U.S. property), invested them in a casino, ceased loan payments, and
    finally signed a consent order purporting to waive Antigua’s sovereign immunity. See
    877 F.2d at 191. The First Fidelity court directed the trial court to examine the
    circumstances surrounding the transaction to determine whether the ambassador acted
    with apparent authority. One important factor in this inquiry, the court suggested, was
    the commercial nature of the transaction. It noted that the context of “[i]nternational
    agreements,” which involved “considerably more dignity than [the ambassador’s]
    purely commercial transactions with First Fidelity,” might be more likely to suggest
    apparent authority. 877 F.2d at 192.
    Second, the affidavits and letters that plaintiffs produced did not make it
    “obvious” that Terán lacked authority to effectuate the waiver. None of these
    documents alleged that Terán was not an accredited representative of Ecuador or that
    he lacked authority to act on behalf of Ecuador under other circumstances. Indeed,
    45
    Ecuador’s highest elected official, President Durán Ballén, filed an affidavit stating
    that Terán had been authorized to act as he did. Plaintiffs countered with experts’
    opinions stating that no Ecuadorian government official had the legal authority to
    waive sovereign immunity. We do not find the legal authorities plaintiffs cite
    particularly convincing, especially in light of the fact that several U.S. courts have
    noted Ecuador’s waiver of sovereign immunity in other transactions. See, e.g., Ortega
    Trujillo v. Banco Central, 
    17 F. Supp. 2d 1340
    , 1343 n.2 (S.D. Fla. 1998); Weston
    Compagnie de Finance et D’Investissement, S.A. v. La Republica del Ecuador, 
    823 F. Supp. 1106
    , 1109 (S.D.N.Y. 1993).
    Plaintiffs also alleged that under the Ecuadorian Constitution, only the Attorney
    General was authorized to act in judicial matters; they presented an affidavit of the
    Attorney General stating that he had not authorized Terán to waive immunity.
    Coincidentally, in Jota, an unrelated case, the Second Circuit recently rejected a
    similar argument relating to representations made by Ambassador Terán.
    An ambassador generally has the power to “bind the state that he
    represents,” unless he purports to enter into an agreement without the
    power to do so and in collusion with a contracting party that knows he
    lacks such power. To this point, the Republic responds that under
    Ecuadoran law, only the Attorney General is authorized to make
    representations on behalf of the Republic in a judicial proceeding. See
    Ecuador Const. art. 139 (“The Attorney General will be the only judicial
    representative of the State . . . .”). However, the quoted language seems
    best understood to make the Attorney General the sole representative of
    the state before the Ecuadoran judiciary, without disturbing the
    46
    traditional authority of ambassadors to represent the state’s position
    before foreign courts.
    Jota, 
    157 F.3d at 162-63
     (citations omitted). In sum, plaintiffs’ evidence regarding
    Terán’s authority was inconclusive. This evidence did not make any lack of authority
    obvious enough to override the presumption that Terán acted on behalf of Ecuador.
    The district court therefore should have accepted jurisdiction over PNB.
    Because we hold that Ambassador Terán’s June 1995 waiver of Ecuador’s
    sovereign immunity was complete and effective, we do not reach the question of
    whether Terán’s August 1995 affidavit also effected a waiver.
    CONCLUSION
    For the foregoing reasons, we REVERSE the order of the district court
    dismissing PNB, VACATE the order of the district court remanding the case to state
    court, REMAND to the district court for further proceedings in accordance with this
    opinion, and DENY plaintiffs’ Motion for Attorneys’ Fees and Costs.
    47