United States v. Aybar-Ulloa ( 2021 )


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  •            United States Court of Appeals
    For the First Circuit
    No. 15-2377
    UNITED STATES OF AMERICA,
    Appellee,
    v.
    JOHVANNY AYBAR-ULLOA,
    Defendant, Appellant.
    APPEAL FROM THE UNITED STATES DISTRICT COURT
    FOR THE DISTRICT OF PUERTO RICO
    [Hon. Jay A. Garcia-Gregory, U.S. District Judge]
    Before
    Howard, Chief Judge,
    Lynch, Thompson, Kayatta, and Barron,
    Circuit Judges.*
    Heather Clark, with whom Clark Law Office was on brief, for
    appellant.
    Scott A.C. Meisler, Attorney, U.S. Department of Justice,
    Criminal Division, Appellate Section, with whom W. Stephen
    Muldrow, United States Attorney, Mariana E. Bauzá-Almonte,
    Assistant United States Attorney, Chief, Appellate Division, Brian
    A. Benczkowski, Assistant Attorney General, and John P. Cronan,
    Principal Deputy Assistant Attorney General, were on brief, for
    appellee.
    *  Judge Torruella heard oral argument in this matter and
    participated in the semble, but he did not participate in the
    issuance of the opinion in this case.
    Opinion En Banc
    January 25, 2021
    KAYATTA, Circuit Judge.         United States law enforcement
    authorities      apprehended    Johvanny    Aybar-Ulloa     ("Aybar")    on    a
    stateless vessel in international waters carrying packages of
    cocaine in violation of the Maritime Drug Law Enforcement Act
    ("MDLEA"), 
    46 U.S.C. §§ 70501
    –70508.          In appealing his subsequent
    conviction, Aybar makes a two-step argument.            First, he contends
    that Congress's authority to criminalize and punish conduct on the
    high seas under Article I, Section 8, Clause 10 of the United
    States Constitution ("the Define and Punish Clause") must be
    cabined by the limitations of international law on a nation's power
    to criminally prosecute conduct on the high seas.                   Second, he
    argues    that   the   United   States   exceeded   those    limitations      of
    international law by prosecuting him in this case.
    In a divided opinion, a panel of this court trained its
    attention exclusively on the second part of Aybar's argument.                 See
    United States v. Aybar-Ulloa, 
    913 F.3d 47
    , 53-56 (1st Cir. 2019).
    Relying on prior circuit precedent, the panel majority rejected
    that necessary part of Aybar's argument for two reasons:                First,
    we previously held in United States v. Victoria, 
    876 F.2d 1009
    (1st Cir. 1989) (Breyer, J.), that international law does indeed
    "give[]   the    United   States . . .     authority   to   treat    stateless
    vessels as if they were its own."           
    Id. at 1010
     (second alteration
    in original) (quoting United States v. Smith, 
    680 F.2d 255
    , 258
    (1st Cir. 1982)).       Second, our prior opinion in United States v.
    - 3 -
    Cardales, 
    168 F.3d 548
     (1st Cir. 1999), included certain statements
    construing    international      law    as    allowing    a    nation    to   define
    trafficking in controlled substances aboard vessels as a threat
    sufficient to justify an assertion of jurisdiction under the
    "protective principle."        
    Id. at 553
    .
    As   both   the   panel    majority    and       the    panel    dissent
    observed, our prior opinion in Victoria "did not fully spell out"
    its reasoning.      Aybar-Ulloa, 913 F.3d at 54; see also id. at 61
    (Torruella, J., dissenting in part).              Cardales, in turn, can be
    read as applying only to the circumstance where a foreign flag
    nation consents to the application of United States law to persons
    found on that nation's flagged vessel.                   Id. at 55-56 (citing
    Cardales, 
    168 F.3d at 552-53
    ).               And the question of the United
    States' jurisdiction over persons on vessels on the high seas
    recurs in this circuit.          For those reasons, we granted Aybar's
    petition to rehear this appeal en banc.
    Following    that    rehearing,       we    now        affirm    Aybar's
    conviction.       In doing so, we find that his prosecution in the
    United States for drug trafficking on a stateless vessel stopped
    and boarded by the United States in waters subject to the rights
    of navigation on the high seas violates no recognized principle of
    international law.       To the contrary, international law accepts the
    criminal prosecution by the United States of persons like Aybar,
    who was seized by the United States while trafficking cocaine on
    - 4 -
    a   stateless   vessel   on   the   high    seas,   just   as   if   they   were
    trafficking on a United States-flagged ship.               We therefore need
    not and do not reach the question of whether the application of
    MDLEA to Aybar would be constitutional were international law
    otherwise.      We also need not and do not rely on the protective
    principle, leaving its potential application for another day.
    Finally, for the reasons agreed upon by the full panel, we vacate
    Aybar's sentence and remand for resentencing under the Sentencing
    Commission's clarified guidance reflected in Amendment 794.                  See
    id. at 56-57.
    I.
    A.
    As Aybar urges, we take the facts as "[p]er the affidavit
    [filed by the government] in support of the complaint."                       On
    August 9, 2013, the HMS Lancaster, a foreign warship, launched a
    helicopter while on patrol in the Central Caribbean.                 Operators
    aboard the helicopter spotted a thirty-foot go-fast vessel dead in
    the water at 15-03N, 067-01W, an area approximately 160 nautical
    miles south of Puerto Rico constituting international waters.1 The
    1 The coordinates provided by the government nonetheless
    appear to place the defendant's vessel within the Exclusive
    Economic Zone ("EEZ") of the United States. Because the right of
    freedom of navigation on the high seas applies in the EEZ, we
    proceed with reference to the rules of interdiction applicable on
    the high seas. United Nations Convention on the Law of the Sea
    ("UNCLOS") arts. 58(1-2), 87, Dec. 10, 1982, S. Treaty Doc.
    No. 103-39, 1833 U.N.T.S. 397; see generally id. pt. VII, § 1. We
    - 5 -
    vessel bore no indicia of nationality and was carrying numerous
    packages in plain view.
    A Law Enforcement Detachment Team of the United States
    Coast Guard was embarked on the HMS Lancaster at the time of the
    incident.     Members of this team launched a small boat to conduct
    a   right-of-visit   approach.        Coast      Guard   personnel       identified
    defendant Aybar and two others aboard the go-fast vessel.                    Aybar
    and another member of the vessel claimed to be citizens of the
    Dominican   Republic,      while    the    master   of     the   vessel    claimed
    Venezuelan citizenship.        In response to inquiry from the Coast
    Guard   personnel,   the    master    of   the    vessel    made    no    claim    of
    nationality for the vessel.          The Coast Guard personnel suspected
    contraband.
    Concluding that the vessel was without nationality, the
    Coast   Guard   personnel    then    boarded      and    searched   the    vessel.
    Following the search, the Coast Guard proceeded to take all three
    men and the packages found on board back to the HMS Lancaster,
    where the packages' contents tested positive for cocaine.                         The
    three men were then transferred to a United States Coast Guard
    vessel and taken to Ponce, Puerto Rico, where they were held in
    custody.
    do not address any potential limitations on freedom of navigation
    in the EEZ that may be imposed in this area. See id. art. 58(3).
    - 6 -
    B.
    Shortly    thereafter,       a    federal    grand   jury    issued      an
    indictment against Aybar, charging him under MDLEA with conspiring
    to possess with intent to distribute cocaine on board a vessel
    subject to the jurisdiction of the United States, 
    46 U.S.C. § 70506
    (b) (count one), and aiding and abetting possession with
    intent to distribute cocaine on board a vessel subject to the
    jurisdiction of the United States, 
    46 U.S.C. §§ 70502
    (c)(1)(A),
    70503(a)(1), 70504(b)(1), 70506(a), 
    18 U.S.C. § 2
     (count two).
    The indictment also included an allegation of forfeiture, 
    46 U.S.C. § 70507
    .
    MDLEA provides that "[w]hile on board a covered vessel,
    an individual may not knowingly or intentionally . . . manufacture
    or distribute, or possess with intent to manufacture or distribute,
    a controlled substance."             
    46 U.S.C. § 70503
    (a)(1).           As relevant
    here,   a   "covered       vessel"    includes    "a    vessel   subject       to   the
    jurisdiction of the United States," 
    id.
     § 70503(e)(1), which is
    defined     to   include       "a     vessel     without     nationality,"          id.
    § 70502(c)(1)(A).      "[A]     vessel       without    nationality,"     in    turn,
    includes "a vessel aboard which the master or individual in charge
    fails, on request of an officer of the United States authorized to
    enforce applicable provisions of United States law, to make a claim
    of   nationality      or    registry     for     that    vessel."        
    46 U.S.C. § 70502
    (d)(1)(B).
    - 7 -
    Aybar   moved     to   dismiss    the   indictment    for   lack   of
    jurisdiction, arguing that Congress's power under Article I "[t]o
    define and punish Piracies and Felonies committed on the high Seas,
    and Offenses against the Law of Nations," U.S. Const. art. I, § 8,
    cl. 10, did not reach his conduct. After the district court denied
    his motion, Aybar proceeded to plead guilty. Aybar's plea accepted
    the facts substantiating the charges against him under MDLEA.
    Those facts, in turn, make clear that the vessel on which he was
    found   was    "a     vessel    without       nationality"    as     defined    in
    section 70502(d)(1)(B) because, while on board the vessel, the
    master made no claim of nationality when requested to do so by a
    United States officer authorized to enforce the United States drug
    laws.   Despite his guilty plea and concessions, Aybar adequately
    preserved his challenge to Congress's constitutional power to
    criminalize his conduct pursuant to its Article I powers.                       See
    Class v. United States, 
    138 S. Ct. 798
    , 804-05 (2018).                          On
    January 9,     2019,    a    divided    panel      rejected   that    challenge,
    affirming his conviction.           For unrelated reasons, the panel also
    vacated the district court's sentence and remanded for further
    proceedings.
    II.
    Our    analysis    proceeds      in   five   parts   summarized    as
    follows:   First, the "go-fast" ship upon which Aybar travelled was
    rendered "stateless" when its master on board failed upon request
    - 8 -
    to make a valid claim of nationality for it, flouting, among other
    things, the important requirement of international law that every
    vessel on the high seas sail under the flag of a nation state.
    Second, as a stateless vessel, the ship was susceptible to the
    exercise of jurisdiction by any nation intercepting the vessel on
    the high seas, just as if the vessel were one of that nation's
    own.       Third, the exercise of jurisdiction over Aybar's ship just
    as if it were a United States vessel included jurisdiction over
    drug trafficking on the vessel just as if it were drug trafficking
    on a United States vessel, which is considered to be the territory
    of the United States.      Fourth, the application of that territorial
    jurisdiction to prosecute Aybar in a United States court for
    illegally trafficking cocaine is compatible with, and welcomed by,
    any    relevant    specific   rules    and    undertakings    governing   the
    assertion of domestic power on the high seas.                Fifth, we offer
    several important caveats.
    A.
    Under international law governing the seas, every vessel
    must sail under the flag of one, and only one, state.                 United
    Nations Convention on the Law of the Sea ("UNCLOS") art. 92,
    Dec. 10, 1982, S. Treaty Doc. No. 103-39, 1833 U.N.T.S. 397.2              In
    2The United States has signed but not ratified UNCLOS. We
    nevertheless cite to it as evidence of the customs and usages of
    international law.   See The Paquete Habana, 
    175 U.S. 677
    , 700
    (1900); cf. United States v. Alaska, 
    503 U.S. 569
    , 588 n.10 (1992)
    - 9 -
    turn, every state maintains an obligation to "fix the conditions
    for the grant of its nationality to ships, for the registration of
    ships in its territory, and for the right to fly its flag," 
    id.
    art. 91(1), and to "issue to ships to which it has granted the
    right to fly its flag documents to that effect," 
    id.
     art. 91(2).
    While the type of registration papers may differ from state to
    state depending on domestic laws, every state must keep a register
    of "the names of all private vessels sailing under its flag," and
    ensure "that every vessel may be identified from a distance."
    1 L.F.L. Oppenheim, International Law §§ 290 (Jennings et al.
    eds., 9th ed. 2008).     "Without a flag or papers, a vessel may also
    traditionally make an oral claim of nationality when a proper
    demand is made."    United States v. Matos-Luchi, 
    627 F.3d 1
    , 5 (1st
    Cir. 2010).
    This "flag-state" system -- by which all vessels are
    required to fly the flag of a state, and states are in turn
    required to approve the conditions for granting rights to fly their
    flag -- serves several purposes.      First, by subjecting vessels to
    the exclusive jurisdiction of the flag state, the flag-state system
    guarantees    freedom   of   navigation    in   international   waters,   as
    states generally may not interfere with the passage on the high
    (noting that the United States has stated that the "baseline
    provisions [of UNCLOS] reflect customary international law"
    (citation omitted)).
    - 10 -
    seas of ships lawfully flying the flag of another state.                      See
    Richard A. Barnes, "Flag States," in The Oxford Handbook on the
    Law of the Sea 313 (Rothwell et al. eds. 2015); cf. UNCLOS
    arts. 87,      90.   Second,    the     flag-state   system   provides      clear
    guidance as to which state bears the primary obligation to regulate
    conduct occurring on vessels on the seas.              See R.R. Churchill &
    A.V. Lowe, The Law of the Sea 205 (1988); cf. UNCLOS art. 94.
    Third,   the    flag-state     system    indicates   which    state   may   bear
    responsibility for the conduct of a ship on the seas.                        See
    Churchill & Lowe, supra, at 205.           Thus, the flag-state system is
    "[o]ne of the most important means by which public order is
    maintained at sea."     Id.
    Aybar concedes that the ship upon which he was found
    plainly did not comply with this system.              It flew no flag, its
    master claimed no nationality, and no other indicia of registration
    or   nationality     were    present     when   authorized     United    States
    officials stopped and boarded the ship.               Presumably for these
    reasons, Aybar does not dispute that his vessel may be treated as
    "stateless" under international law.            See, e.g., Matos-Luchi, 
    627 F.3d at 6
     (stating that a vessel "may be deemed 'stateless' . . .
    if it fails to display or carry insignia of nationality and seeks
    to avoid national identification").
    - 11 -
    B.
    International      law       plainly    provides      that     a   nation's
    warship (or law enforcement ship) may stop and board a stateless
    vessel on the high seas.             See UNCLOS art. 110(1)(d); Restatement
    (Third)   of    the   Foreign        Relations      Law    of   the   United      States
    § 522(2)(b)     (1987)    [hereinafter           "Restatement      (Third)"]       ("[A]
    warship or clearly-marked law enforcement ship of any state may
    board [a nongovernmental ship] . . . if there is reason to suspect
    that the ship . . . is without nationality . . . ."); see also
    Brownlie's     Principles       of    Public       International      Law       285,   292
    (Crawford      ed.,      9th ed.          2019)      [hereinafter           "Brownlie's
    Principles"]; Malcolm Shaw, International Law 457 (8th ed. 2017)
    ("A ship that is stateless, and does not fly a flag, may be boarded
    and seized on the high seas."); Myres S. McDougal & William T.
    Burke, The Maintenance of Public Order at Sea and the Nationality
    of Ships, 54 Am. J. Int'l L. 25, 76-77 (1960) ("So great a premium
    is placed upon the certain identification of vessels for purposes
    of   maintaining      minimal    order      upon     the    high   seas . . .          that
    extraordinary deprivational measures are permitted with respect to
    stateless ships.").      In short, "[b]ecause stateless vessels do not
    fall   within     the    veil        of    another        sovereign's     territorial
    protection," the vessel is afforded no right of free navigation.
    United States v. Rendon, 
    354 F.3d 1320
    , 1325 (11th Cir. 2003)
    (quoting United States v. Caicedo, 
    47 F.3d 370
    , 373 (9th Cir.
    - 12 -
    1995)); see also United States v. Rubies, 
    612 F.2d 397
    , 402-03
    (9th Cir. 1979) ("A foreign flag[ged] vessel is thereby protected
    by   her   country     of     registration. . . .        An     unregistered,      or
    'stateless,'        vessel,    however,   does    not   have    these   rights     or
    protections.").
    To say that international law grants to any state the
    authority      to   interdict    and    exercise    physical     control    over    a
    stateless vessel is to say that international law renders stateless
    vessels "susceptible to the jurisdiction of any State," Barnes,
    supra, at 314, including the United States.                  See Smith, 
    680 F.2d at 258
     (recognizing that "[i]nternational law . . . allows any
    state to extend its authority over a stateless ship") (citing
    United Nations Convention on the High Seas, 13 U.S.T. 2313,
    T.I.A.S. No. 5200 (1958)); see also United States v. Juda, 
    46 F.3d 961
    , 967 (9th Cir. 1995); United States v. Martinez-Hidalgo, 
    993 F.2d 1052
    ,    1055    (3d    Cir.    1993);    Victoria,     
    876 F.2d at 1010
    (recognizing that international law "gives the United States . . .
    authority to treat stateless vessels as if they were its own");
    United States v. Alvarez-Mena, 
    765 F.2d 1259
    , 1265 (5th Cir. 1985)
    ("[I]nternational law does not preclude any nation from exercising
    jurisdiction over stateless vessels on the high seas."); United
    States v. Pinto-Mejia, 
    720 F.2d 248
    , 260-61 (2d Cir. 1983); United
    States v. Marino-Garcia, 
    679 F.2d 1373
    , 1383 (11th Cir. 1982)
    ("[I]nternational law permits any nation to subject stateless
    - 13 -
    vessels on the high seas to its jurisdiction."); United States v.
    Howard-Arias, 
    679 F.2d 363
    , 371 (4th Cir. 1982); Malcolm D. Evans,
    "The Law of the Sea," in International Law 651, 656-60 (Malcolm D.
    Evans ed., 3d ed. 2010) ("[I]f a ship is stateless, or flies more
    than one flag so that its true State of registry is not clear,
    then any state can exercise jurisdiction over it.") (cited with
    approval in Restatement (Fourth) of the Foreign Relations Law of
    the   United   States   § 408   n.3   (2018)   [hereinafter   "Restatement
    (Fourth)"]).
    In sum, there is no doubt that the United States could
    exercise jurisdiction over the stateless vessel upon which Aybar
    was found.
    C.
    Offering no persuasive reason why the United States
    could not exercise jurisdiction over the stateless vessel upon
    which he was found, Aybar narrows his focus to his prosecution.
    While it may be clear that international law allows any state to
    exercise jurisdiction over a flagless vessel, even to the point of
    stopping, boarding and seizing it should they wish to do so, he
    asserts that the prosecution of those on board the vessel under
    the laws of the seizing country is a different matter altogether.
    With respect to United States-flagged vessels, the law
    does not distinguish between jurisdiction over the vessel itself
    and jurisdiction over the people on the vessel and their conduct
    - 14 -
    on   board.       It   is    well     settled    that    the    United   States    has
    jurisdiction      over      conduct    occurring    on    United    States-flagged
    vessels    because:         (1) "[t]he     deck     of     a     private   American
    vessel . . . is considered . . . constructively as territory of
    the United States," Ross v. McIntyre, 
    140 U.S. 453
    , 464 (1891);
    and (2) a state's jurisdiction over conduct on its territory is
    one of "the most commonly recognized bases of jurisdiction,"
    Restatement (Fourth) § 407 cmt. c; see also id. § 408 cmt. a ("A
    state    may    exercise     prescriptive       jurisdiction      with   respect    to
    persons, property, and conduct within its territory."); Smith, 
    680 F.2d at 257
     (similar).                Cf. Restatement (Third) § 502 cmt. d
    (explaining that a flag state has jurisdiction over "the conduct
    of a ship" as well as "any activity aboard the ship").
    Two centuries of case law strongly suggest that the same
    territorial principles apply to conduct aboard a stateless vessel.
    Shortly after our nation's founding, the United States Supreme
    Court issued a series of opinions addressing the scope of the
    United    States'      jurisdiction      over    conduct       committed   on   board
    non-United States vessels.              The Court rejected the assertion of
    jurisdiction in domestic courts over murders committed by and
    against foreigners on foreign vessels.                    See United States v.
    Furlong, 18 U.S. (5 Wheat.) 184, 196–98 (1820); see also United
    States v. Klintock, 18 U.S. (5 Wheat.) 144, 151 (1820).                     Murders
    committed by and against foreigners on stateless vessels, though,
    - 15 -
    could be prosecuted in the United States.           See Klintock, 18 U.S.
    at 151–52; United States v. Holmes, 18 U.S. (5 Wheat.) 412, 417–
    18; see also Furlong, 18 U.S. at 194–95 (stating that murder is
    "equally punishable" in the courts of the United States when
    committed on an American ship or on a stateless pirate ship, as
    opposed to on a foreign ship, which presented "a question of more
    difficulty").
    While those cases dealt with vessels that were deemed
    stateless because of piratical conduct, the Court did not hold
    that piracy was the only means by which a vessel could be deemed
    stateless    so   as   to     justify    United    States    prosecutorial
    jurisdiction.     On   that   point,    Holmes    conveyed   the   opposite,
    signaling that conduct of persons on board a stateless vessel could
    be prosecuted whether the vessel was piratical or not:
    The said Circuit Court had jurisdiction of the
    offen[s]e charged in the indictment, if the
    vessel, on board of which it was committed,
    had, at the time of the commission thereof, no
    real national character but was possessed and
    held by pirates, or by persons not lawfully
    sailing under the flag, or entitled to the
    protection of any government whatsoever.
    18 U.S. at 419.
    These founding-era cases also did not hold that a foreign
    national may be prosecuted in the United States for his conduct on
    the high seas only if he personally renounces his nationality by
    engaging in piracy.         True, the Court certainly approved the
    - 16 -
    prosecution of "those who acknowledge the authority of no State."
    Klintock, 18 U.S. at 152. But the Court also repeatedly emphasized
    the statelessness of the ship, rather than the nationality of the
    persons on board, in upholding the United States' exercise of
    jurisdiction over those persons.           For example, in Klintock, the
    Court held that "persons on board of a vessel not at the time
    belonging to the subjects of any foreign power, but in possession
    of   a   crew   acting   in   defiance   of    all   law,   and   acknowledging
    obedience to no government whatever, . . . are proper objects for
    the penal code of all nations."          Id.    To the extent that there is
    any ambiguity as to whether the phrase "acknowledging obedience to
    no government whatever" was intended to modify the "persons" or
    the "vessel" at issue, the Court clarified in Holmes that the
    status of the vessel was determinative:
    In Klintock's case, it was laid down, that to
    exclude the jurisdiction of the Courts of the
    United States, in cases of murder or robbery
    committed on the high seas, the vessel in
    which the offender is, or to which he belongs,
    must be, at the time, . . . the property of a
    subject of a foreign State, and . . . subject,
    at that time, to [its] control. But if the
    offen[s]e be committed in a vessel, not at the
    time belonging to subjects of a foreign State,
    but in possession of persons acknowledging
    obedience to no government or flag, and acting
    in defiance of all law, it is [punishable in
    the courts of the United States]. It follows,
    therefore, that murder or robbery committed on
    the high seas, may be an offen[s]e cognizable
    by the Courts of the United States, although
    it was committed on board of a vessel not
    belonging to citizens of the United States, []
    - 17 -
    if she had no national character, but was
    possessed and held by pirates, or persons not
    lawfully sailing under the flag of any foreign
    nation.
    18 U.S. at 416–17.           Because the Court in Holmes held that the
    existence of jurisdiction depended on whether or not the vessel at
    issue was under the control of a foreign nation, "it made no
    difference,     as    to    the    point   of   jurisdiction,          whether   the
    [offenders] were citizens of the United States" or citizens of
    foreign nations.           Id. at 419–20.       As we have described, this
    approach     comports       with   the     overall     system     of     flag-state
    jurisdiction.        See Furlong, 18 U.S. at 198 (explaining that the
    distinction between foreign vessels and stateless vessels serves
    to avoid "offensive interference with the governments of other
    nations").
    Our concurring colleague well develops the case for
    treating Holmes as binding authority dictating our holding in this
    case.   This is certainly a defensible view.               If murder, a crime
    over which there is no universal jurisdiction, can be prosecuted
    by the United States when committed by a foreigner upon a foreigner
    on a vessel that has no national character, why can the United
    States not also prosecute drug trafficking committed by a foreigner
    on such a vessel?       Nevertheless, the sometimes challenging syntax
    in   Holmes,   Furlong,      and   Klintock,    plus    the     possibility      that
    international law itself now differs materially from international
    - 18 -
    law as understood 200 years ago, counsel against resting our
    conclusion solely on those cases if we do not need to do so.                     And
    we do not.
    No other circuit has held that conduct aboard a stateless
    vessel seized by the United States on the high seas may not be
    prosecuted as conduct committed on United States territory.3                     See
    United States v. Moreno-Morillo, 
    334 F.3d 819
    , 828 (9th Cir. 2003)
    (noting that "a showing of statelessness effectively moots the
    nexus       requirement     because      those     aboard      stateless    vessels
    effectively have waived their right to object to the exercise of
    jurisdiction       over    them   by    United   States     courts");      see   also
    Marino-Garcia, 
    679 F.2d at 1383
     (concluding that stateless status
    "makes the vessel subject to action by all nations proscribing
    certain activities aboard stateless vessels and subjects those on
    board to prosecution for violating th[ose] proscriptions"); Juda,
    
    46 F.3d at 967
     (recognizing no distinction between the right to
    seize stateless vessels and the right to prosecute persons on board
    them); Alvarez-Mena, 
    765 F.2d at 1266-67
     (same).
    While there is no unanimity among scholars on this point,
    see Douglas Guilfoyle, "The High Seas," in The Oxford Handbook on
    the   Law     of   the    Sea   218    (Rothwell    et   al.    eds.   2015),    the
    Because we sustain MDLEA as applied to Aybar, we need not
    3
    decide whether and to what effect MDLEA should be construed as
    reaching even more broadly.
    - 19 -
    longstanding unanimity among United States courts is especially
    significant,        as    "the    state    practice        of   the     United    States
    contributes to the development of customary international law when
    followed      out    of    a     sense    of   international          legal   right   or
    obligation."        Restatement (Fourth) § 402 cmt. b; see also id. n.2.
    Treating conduct on stateless vessels in this manner
    furthers a basic aim of international law to achieve order on the
    high   seas    by    disincentivizing          the   use   of   stateless        vessels.
    Marino-Garcia, 
    679 F.2d at 1382-83
    .                   This approach also yields
    significant practical benefits, such as reducing complications
    when, for example, officials of the seizing nation are needed as
    witnesses in a subsequent prosecution of offenses committed on the
    vessel.    Moreover, those who set out in stateless vessels cannot
    be said to possess the same reasonable expectation of sanctuary
    from foreign jurisdiction under international law as those on a
    flagged vessel would.            See Caicedo, 
    47 F.3d at 372
     (distinguishing
    properly flagged vessels, which have a "legitimate expectation" of
    being subject only to the laws of the flag state, from stateless
    vessels, which "subject themselves to the jurisdiction of all
    nations" such that a state's exercise of jurisdiction over them
    cannot, categorically, be said to be "arbitrary or fundamentally
    unfair"); see also Moreno-Morillo, 
    334 F.3d at 828
    ; Marino-Garcia,
    
    679 F.2d at 1382
     (describing stateless vessels as "international
    pariahs" having "no internationally recognized right to navigate
    - 20 -
    freely on the high seas" and finding no categorical limits to the
    exercise     of   jurisdiction       over    stateless     vessels    under
    international law).      Simply put, if a person intent on drug
    trafficking on the high seas wants to be prosecuted in his own
    country should he be caught, he should sail under that country's
    flag.
    D.
    Aybar contends that, notwithstanding the foregoing, his
    prosecution was prohibited by other, more specific rules and
    undertakings governing jurisdiction and the high seas.           As we will
    explain, we find that the relevant and more specific rules and
    undertakings are entirely consistent with our conclusion that
    Aybar was properly subject to prosecution in the United States for
    his conduct on board the stateless vessel.
    1.
    Aybar first points to the 1988 United Nations Convention
    Against    Illicit   Traffic   in    Narcotic   Drugs    and   Psychotropic
    Substances ("UN Drug Trafficking Convention"), U.N.T.S. 27627
    (1988), which was adopted to give effect to UNCLOS's call on states
    to "cooperate in the suppression of illicit traffic in narcotic
    drugs" on the high seas, UNCLOS art. 108.        Specifically, he points
    out that the UN Drug Trafficking Convention does not explicitly
    address the possibility of states exercising jurisdiction over
    persons found engaging in drug trafficking on stateless vessels on
    - 21 -
    the high seas.       See UN Drug Trafficking Convention art. 17.              But
    it does not rule out such prosecutions either.              To the contrary,
    at least one United Nations body has suggested that states may
    exercise jurisdiction under the convention over persons found
    engaging    in      illegal    activities     on   stateless       vessels,   in
    combination with domestic sources of authority.             See Commission on
    Crime Prevention and Criminal Justice, Outcome of the Expert Group
    Meeting on Transnational Organized Crime at Sea, held in Vienna,
    Austria, on 5-6 April 2016, U.N. Doc. E/CN.15/2016/CRP.3, ¶ 18
    (May 19,    2016)    (recognizing    debate    over     enforcement    activity
    against perpetrators found on stateless vessels but observing that
    "if a State is party to the [UN Drug Trafficking Convention], it
    should exercise jurisdiction over vessels without nationality").
    To implement the UN Drug Trafficking Convention, several
    European states adopted the 1995 Council of Europe Convention on
    Illicit Traffic by Sea.        That convention provides further support
    for the proposition that international law welcomes prosecutions
    by the seizing nation of those found engaged in drug trafficking
    on stateless vessels:         It not only allows but requires parties to
    prosecute persons found trafficking drugs on stateless vessels.
    See Agreement on Illicit Traffic by Sea, Implementing Article 17
    of   the   United    Nations   Convention     Against    Illicit    Traffic   in
    Narcotic Drugs and Psychotropic Substances art. 3, C.E.T.S. 156
    (1995) (mandating that "each Party shall take such measures as may
    - 22 -
    be necessary to establish its jurisdiction over the relevant
    offen[s]es      committed      on     board       a   vessel      which    is    without
    nationality,      or   which     is       assimilated       to    a    vessel    without
    nationality under international law").4
    Several other international law instruments similarly
    leave open the possibility of states taking law enforcement action
    against persons found on stateless vessels.                           Such instruments
    typically use language indicating that states may take action "in
    accordance with relevant domestic and international law" after
    searching a stateless vessel on the high seas.                          See Brownlie's
    Principles,      supra,     at      291    (explaining         that     this    language
    "perpetuates the ambiguity regarding the exercise of prescriptive
    jurisdiction     and     enforcement        over      stateless       vessels").     For
    example,   the    2000     Migrant        Smuggling     Protocol       indicates    with
    respect    to    vessels    without        nationality       that      "[i]f    evidence
    confirming the suspicion [of smuggling] is found," the boarding
    State "shall take appropriate measures in accordance with relevant
    domestic   and    international           law."       See   Protocol      Against    the
    Smuggling of Migrants by Land, Sea and Air, Supplementing the
    4  See also Agreement Concerning Co-Operation in Suppressing
    Illicit   Maritime  Air   Trafficking  in   Narcotic  Drugs   and
    Psychotropic Substances in the Caribbean Area (not yet in force)
    (signed by the United States on April 10, 2003) (providing the
    same).
    - 23 -
    United Nations Convention Against Transnational Organized Crime
    art. 8(7), U.N.T.S. 2241 (2000) (emphasis added).
    Likewise, the United Nations Straddling Fish Stocks
    Agreement suggests that states may take enforcement action against
    stateless fishing vessels for illegal fishing "in accordance with
    international law," but does not specify what such action might
    entail.      See Agreement for the Implementation of the Provisions of
    the United Nations Convention on the Law of the Seas of 10 December
    1982 Relating to the Conservation and Management of Straddling
    Stocks and Highly Migratory Fish Stocks art. 21(17), Conference on
    Straddling         Fish    Stocks   and     Highly   Migratory    Fish    Stocks,
    6th Sess.,        U.N.    Doc. A/CONF.164/37     (Sept. 8,    1995);     see   also
    Douglas Guilfoyle, Shipping Interdiction and the Law of the Sea
    108 (2009) (observing that this language "accommodat[es] divergent
    views       as   to   prescriptive    and    enforcement     jurisdiction      over
    stateless        vessels   at   general   international      law").      Moreover,
    various regional fisheries organizations have encouraged states to
    take legal action where evidence is found of illegal fishing on
    stateless vessels.5          See Guilfoyle, Shipping Interdiction and the
    See, e.g., International Commission for the Conservation
    5
    of Atlantic Tunas (ICCAT), Recommendations by ICCAT on Vessel
    Sightings, ¶ 3 (June 20, 2020) ("If the vessel is confirmed to be
    without nationality, a competent authority . . . is encouraged to
    inspect the vessel, consistent with international law and, if
    evidence so warrants, the Contracting Party is encouraged to take
    such action as may be appropriate, in accordance with international
    law."); Northeast Atlantic Fisheries Commission, Scheme of Control
    - 24 -
    Law of the Sea, supra, at 129 (explaining that the Northeast
    Atlantic    Fisheries    Commission     Scheme    "appears    to     directly
    encourage     the    adoption      of       national   laws        permitting
    extraterritorial enforcement action against stateless vessels,"
    even if, like the UN Drug Trafficking Convention, it does not
    itself provide for such enforcement measures); Rosemary Rayfuse,
    Non-Flag State Enforcement in High Seas Fisheries 330-31 (2004).
    Moreover, certain bilateral instruments to which the
    United States is a party explicitly leave open the possibility of
    states taking enforcement action against persons found on board
    stateless vessels where the evidence so warrants.                See, e.g.,
    Agreement between the Government of the United States of America
    and the Government of the Dominican Republic Concerning Maritime
    Counter-Drug Operations, U.S.-Dom. Rep., Mar. 23, 1995, T.I.A.S.
    No. 12620 (providing that counter-drug operations pursuant to the
    agreement    may    be   carried      out    against   vessels       "without
    nationality," but also noting under the protocol to the agreement
    that law enforcement personnel are to act in accordance with
    and Enforcement, art. 38(2) (Feb. 7, 2020); see also Indian Ocean
    Tuna Commission, Resolution 16/05 on Vessels Without Nationality
    (Sept. 27,   2016);   United   Nations   Food   and   Agriculture
    Organization, Implementation of the International Plan of Action
    to Prevent, Deter and Eliminate Illegal, Unreported, and
    Unregulated Fishing 14-15 (2002) ("Taking action against
    [stateless] vessels should be a high priority, because their very
    statelessness frustrates the primary means to control fishing
    activity on the high seas -- through flag State jurisdiction.").
    - 25 -
    international    law   when    engaging     in   boardings   and    searches);
    Agreement    between    the   United    States    of   America     and   Cyprus
    Concerning Cooperation to Suppress the Proliferation of Weapons of
    Mass Destruction, Their Delivery Systems, and Related Materials by
    Sea,    U.S.-Cyp.,     July 25,    2005,     T.I.A.S. 06-112        (including
    stateless vessels among the vessels against which operations may
    be undertaken under the agreement); Agreement between the United
    States of America and Belize Concerning Cooperation to Suppress
    the Proliferation of Weapons of Mass Destruction, Their Delivery
    Systems, and Related Materials by Sea, U.S.-Blz., Oct. 29, 2005,
    T.I.A.S. 05-1019 (same); see also United States v. Bravo, 
    489 F.3d 1
    , 4 (1st Cir. 2007) (recounting that the claimed flag state could
    not confirm registry of the vessel and authorized the United States
    to proceed with law enforcement action under "international law").
    2.
    Aybar insists that UNCLOS nevertheless prohibits his
    prosecution.    He relies on Article 110, which provides a right to
    visit ships suspected of being without nationality and to search
    those ships if suspicion of statelessness remains after checking
    the ship's documents.         See also Aybar-Ulloa, 913 F.3d at 62-63
    (Torruella, J., dissenting in part) (arguing that the unilateral
    extension of domestic jurisdiction over a stateless vessel on the
    high seas without a nexus violates UNCLOS).            But in recognizing a
    right   to    visit    certain    ships,    including    a   ship     "without
    - 26 -
    nationality," Article 110 does not prohibit the prosecution of
    those on board.         It simply remains silent as to whether and when
    the visiting nation may prosecute persons found on the ship.
    Aybar argues that we should draw a negative inference
    from that silence because other articles of UNCLOS do contain
    express grants of authority to penalize persons found on certain
    vessels.      For example, Article 105 authorizes the arrest and
    punishment       of    persons       found     on       pirate    ships.         Similarly,
    Articles 99 and 109 expressly grant the power to penalize persons
    for   engaging         in     slavery         and       unauthorized         broadcasting,
    respectively.         We reject the negative inference Aybar would have
    us draw for two reasons.
    First, and most simply, there are obvious differences
    between    the    examples        given   and       that    of    a    stateless     vessel,
    undercutting any negative inference that could be drawn from the
    presence of express grants in some articles but not others.                               For
    starters, a ship engaged in piracy may retain its nationality.
    UNCLOS    art. 104.         So    there       was   a    reason       for   Article 105    to
    expressly     confirm         that      any     state      can        exercise   universal
    jurisdiction to seize and prosecute individuals on such a ship --
    otherwise, it might have been possible to argue that only the
    ship's flag state would be able to seize and prosecute those
    individuals.          Under      this   reading,         Article 105        grants   no   new
    authority.    Similarly, because vessels that engage in unauthorized
    - 27 -
    broadcasting can retain their nationality, an exception was needed
    to overcome the presumption of exclusive flag-state jurisdiction
    where it was desirable for impacted states to have the possibility
    of arresting "person[s] or ship[s] engaged in" this activity.                 See
    id. art. 109(4) (providing that states receiving transmissions or
    suffering from interference may exercise their jurisdiction to
    prosecute unauthorized broadcasting).                 Further, because slave
    ships also generally retain their nationality, Article 99 had to
    expressly impinge on flag-state jurisdiction in order to declare
    that enslaved persons found on any ship are ipso facto free.
    Without these provisions -- which codify limitations on the rights
    of flag states where their ships engage in conduct of severe
    concern to the international community -- other states may have
    presumed that their hands were tied.
    Not   so   in   the    case   of   the   stateless   vessel.     The
    presumption of flag-state jurisdiction, which arguably made the
    express grants of authority in Articles 99, 105, and 109 necessary,
    simply does not apply where the vessel at issue is stateless.
    Rather, as we have explained, stateless vessels are treated as
    subject to the exercise of authority by any nation.                Accordingly,
    the absence of an express grant of authority to seize and prosecute
    persons on board a stateless vessel in Article 110 does not, on
    its   own,   establish       that   Aybar's     seizure   and   prosecution   are
    prohibited by UNCLOS.
    - 28 -
    Second, Aybar's argument cannot be squared with the
    approach taken in the international instruments and undertakings
    we have described.      If a categorical rule against the extension of
    domestic jurisdiction over stateless vessels could be found in
    UNCLOS Article 110, it is unlikely that subsequent instruments
    mentioning stateless vessels could avoid it or that their drafters
    would have been unaware of it.         Instead, it appears that in the
    decades since UNCLOS was concluded, the relevant international
    organizations and actors have resolved to leave the issue to the
    judgment of states.      See Guilfoyle, "The High Seas," supra, at 218
    (explaining that "[t]reaty law is silent" on the extension of
    national jurisdiction over stateless vessels without a nexus and
    "sometimes    deliberately    ambiguous"    such   that    existing   treaty
    language      "covers      divergent       national       (and    academic)
    interpretations").
    Our reading of international law does not render the
    United States an outlier.       Other nations have also adopted laws
    and regulations permitting exercises of domestic jurisdiction over
    stateless vessels and persons found on board them.               See United
    Nations Food and Agriculture Organization, Implementation of the
    International Plan of Action to Prevent, Deter and Eliminate
    Illegal, Unreported, and Unregulated Fishing 15 (2002) (discussing
    laws adopted by Canada and Norway to extend jurisdiction over
    stateless vessels); see also Fisheries Jurisdiction Case (Spain v.
    - 29 -
    Canada), Jurisdiction, Judgment, 1998 I.C.J. Rep. 432, ¶¶ 19, 61
    64, 75 (Dec. 4) (describing Canada's seizure of a vessel under its
    Coastal Fisheries Protection Act, adopted to cover high seas areas
    governed by the Northwest Atlantic Fisheries Organization, and the
    subsequent arrest and prosecution of its master for illegal fishing
    under       that   law,   as   well    as     Spain's     response   that   such   law
    enforcement actions were permissible only if the vessel were
    stateless); Molvan v. Attorney-General for Palestine, A.C. 351
    (1948); Guilfoyle, "The High Seas," supra, at 218 (noting that the
    United States and United Kingdom have historically taken the view
    that no nexus is required to extend national jurisdiction over a
    stateless vessel).6 That there is not even more evidence of similar
    state       practices     engenders     no     surprise,     given   the    practical
    difficulties        of    seizing     ships    on   the    high   seas.      "[W]hile
    international law may allow states to arrest stateless vessels,
    states may not yet have appropriated that right unto themselves."
    Rayfuse, supra, at 330 (explaining that the absence of a widespread
    practice of arresting and prosecuting stateless fishing vessels
    may "reflect[] . . . the reality that few states have the physical
    capability to arrest these vessels on the high seas" and that
    See generally Coastal Fisheries Protection Act (R.S.C.,
    6
    1985, c. c-33) § 5.5 (Canada); Marine Resources Act no. 37 (6 June
    2008) (Norway), available at https://www.fiskeridir.no/English/
    Fisheries/Regulations/The-marine-resources-act;    Policing    and
    Crime Act 2017, c.3 § 84(1)(b) (United Kingdom), available at
    https://www.legislation.gov.uk/ukpga/2017/3/section/84.
    - 30 -
    "states   may    lack    a   basis     in    their   domestic    legal    framework
    permitting their authorities to take such action").
    E.
    We add, finally, several caveats.
    First, our holding makes no attempt to assert universal
    jurisdiction over drug trafficking offenses.                The holding does not
    apply at all to the large majority of vessels sailing on the high
    seas. Rather, it applies only to vessels flouting order and custom
    on the high seas by eschewing the responsibilities and protections
    of the flag-state system.
    Second, we do not suggest that international law does
    not apply to the seizure of the vessel or that persons on board
    such vessels fall outside of the protection of international law.
    See   Rayfuse,    supra,     at   57      (explaining     that   "a   ship    without
    nationality[] is not necessarily a ship without law[,] . . . [b]ut
    it is a ship without protection" (quoting D.P. O'Connell, 2 The
    International Law of the Sea 755 (1984))).                Fundamental principles
    of customary international human rights law, and requirements of
    due process under United States law, may well still apply in
    circumstances      not   present       in    this    appeal.      See    Brownlie's
    Principles, supra, at 285 (noting that stateless ships "are not
    outside the law altogether," as "their occupants are protected by
    elementary      considerations       of     humanity");    Maarten      Den   Heijer,
    Europe and Extraterritorial Asylum 238 (2012) (recognizing that
    - 31 -
    the "taking of coercive measures" against stateless vessels "is
    likely to come within the ambit of human rights law"); see also
    United States v. Ballestas, 
    795 F.3d 138
    , 148 (D.C. Cir. 2015);
    United States v. Yousef, 
    327 F.3d 56
    , 111-12 (2d Cir. 2003) (citing
    United States v. Davis, 
    905 F.2d 245
    , 248-49 (9th Cir. 1990));
    Cardales, 
    168 F.3d at 553
    .
    While the fundamental "arbitrariness or unfairness" of
    a prosecution may depend in some part on notions of "fair warning"
    under either domestic or international law, see United States v.
    Van Der End, 
    943 F.3d 98
    , 106 (2d Cir. 2019), such "fair warning"
    has certainly been given in the case of drug trafficking. Although
    not    a   crime    that    gives      rise     to   universal     jurisdiction,   see
    Restatement        (Fourth)       § 413    n.1       (explaining    that    "universal
    jurisdiction is limited to the most serious offenses about which
    a     consensus     has      arisen       for    the     existence     of    universal
    jurisdiction"); United States v. Cardales-Luna, 
    632 F.3d 731
    ,
    740-41 (Torruella, J., dissenting), drug trafficking has long been
    regarded as a serious crime by nearly all nations.                          See United
    Nations Treaty Depositary, Status of the United Nations Convention
    against Illicit Traffic in Narcotics (accessed August 9, 2020)
    (indicating that 191 states are party to the UN Drug Trafficking
    Convention);       see     also   
    46 U.S.C. § 70501
    (1)    (recognizing    that
    "trafficking in controlled substances aboard vessels is a serious
    international problem" that "is universally condemned").
    - 32 -
    Third, we opt not to decide one way or the other whether
    the United States may prosecute a foreign citizen engaged in drug
    trafficking on a stateless vessel where the United States never
    boarded and seized the vessel.          Nor do we reach the question of
    whether the MDLEA by its own terms reaches such a situation.               In
    this case the law has been applied to a person apprehended on board
    the stateless vessel when stopped and boarded by United States
    Coast Guard officers.         Although the government seeks a broader
    ruling in its supplemental briefing, it does not abandon its
    argument that "MDLEA was not unconstitutional as applied to this
    case because Aybar's stateless vessel was intercepted on the high
    seas" by the United States.             And resolving this "as applied"
    argument is all that is necessary to dispose of this appeal.
    Finally,    nothing    in     our     reasoning   forecloses    a
    successful claim of diplomatic protection by a foreign state,
    should a foreign state make such a petition on behalf of its
    national.    See Barnes, supra, at 315; Churchill & Lowe, supra, at
    172.   What we hold, instead, is that international law does not
    generally    prohibit   the    United    States    from   prosecuting   drug
    traffickers found on a stateless vessel stopped and boarded by the
    United States on the high seas as if they had been found on a
    United States vessel subject to the territorial jurisdiction of
    the United States.      Therefore, even if Congress's power under the
    - 33 -
    Define and Punish Clause is cabined by international law, Aybar's
    prosecution under MDLEA would not exceed any such limitation.
    III.
    That leaves only Aybar's challenge to his sentence.         For
    the reasons stated in the panel opinion, we vacate and remand for
    resentencing under the Sentencing Commission's clarified guidance,
    as reflected in Amendment 794.     See Aybar-Ulloa, 913 F.3d at 56–
    57 (citing United States v. Sarmiento-Palacios, 
    885 F. 3d 1
    , 6
    (1st Cir. 2018)).
    IV.
    For the foregoing reasons, we affirm the defendant's
    conviction,   vacate   the   defendant's   sentence,   and   remand   for
    resentencing.
    - Concurring Opinion Follows -
    - 34 -
    BARRON,      Circuit      Judge,   concurring   in   the    judgment.
    Johvanny Aybar-Ulloa ("Aybar") contends that Article I, Section 8,
    Clause 10 of the United States Constitution, which authorizes
    Congress to "define and punish . . . Felonies committed on the
    high Seas," provides the sole constitutional source of power for
    the   Maritime   Drug    Law    Enforcement      Act   ("MDLEA"),     
    46 U.S.C. §§ 70501-70508
    .    He further argues that there is an implicit limit
    on this power, rooted in the law of nations, and that this limit
    restricts Congress's authority to rely on this Clause to extend
    our country's domestic criminal laws to foreign nationals who
    violate them while they are outside the territorial jurisdiction
    of the United States.          He therefore contends that his conviction
    under the MDLEA is unconstitutional, because he is a foreign
    national who is alleged to have engaged in drug trafficking while
    in international waters and on a vessel that is not registered to
    the United States.
    In pressing this contention, Aybar asserts that his
    prosecution for violating the MDLEA cannot be deemed to accord
    with international law on the ground that the offense for which he
    was convicted is a crime against all nations.              He emphasizes that
    this is so because international law does not recognize drug
    trafficking as a universal jurisdiction offense.                      He further
    asserts   that   there    is    no    basis    under   international       law   for
    - 35 -
    permitting the United States to criminalize the conduct for which
    he was convicted based on an assertion of what is known as
    protective jurisdiction.       This is so, he contends, because there
    was no nexus between his drug trafficking and the United States,
    as the vessel that he was on left from one foreign country and was
    headed to another.     See United States v. Robinson, 
    843 F.2d 1
    , 3-
    4 (1st Cir. 1988) (Breyer, J.) (noting "forceful argument" against
    application of protective principle to encompass drug trafficking
    on the high seas).
    There is a fair amount of support for the contention
    that Article I's Define and Punish Clause is impliedly limited by
    the law of nations in ways that constrain Congress's authority to
    rely on that Clause to subject foreign nationals to our criminal
    laws for conduct that they engage on while they are on foreign
    vessels -- even when those vessels are on the high seas.                See
    United States v. Furlong, 18 U.S. (5 Wheat.) 184, 197-98 (1820)
    ("Congress . . . ha[s] no right to interfere" with other nations
    by "punishing [murders by foreign nationals] when committed within
    the [foreign] jurisdiction, or, (what is the same thing,) in the
    vessel of another nation."); see also Congressman John Marshall,
    Speech to the House of Representatives (Mar. 7, 1800), in 10 Annals
    of   Cong.   607   (1800)   (hereinafter   "Speech   of   John   Marshall")
    (arguing that the Define and Punish Clause cannot authorize federal
    "jurisdiction over offences, committed on board a foreign ship
    - 36 -
    against a foreign nation" on the high seas); Justice James Wilson,
    Charge to the Grand Jury of the Circuit Court for the District of
    Virginia (May 23, 1791), reprinted in 2 The Documentary History of
    the Supreme Court of the United States, 1789-1800, at 179 (Maeva
    Marcus ed., 1988) (suggesting that "no state or states can; by
    treaties or municipal laws, alter or abrogate the law of nations"
    to the extent of reaching the crime of murder by a foreigner aboard
    a foreign flag ship).7      But, without disputing that point, and
    without relying on either a claim that the crime involved here
    qualifies as a universal jurisdiction offense or that the MDLEA is
    the product of our nation's valid assertion of its protective
    jurisdiction,   the    majority    nevertheless   rejects   Aybar's
    constitutional challenge.
    The majority does so because, it rightly points out,
    although Aybar was on the high seas while he was in possession of
    the cocaine that led to his MDLEA charges, he was not at that time
    on a foreign vessel.   Instead, he was on a stateless one that our
    7 In fact, the United States itself early on took the position
    before the Supreme Court that the Define and Punish Clause was
    subject to this limitation, even though it takes the opposite view
    here. See United States v. Palmer, 16 U.S. (3 Wheat.) 610, 620
    (1818) (argument of Mr. Blake on behalf of the United States) ("A
    felony, which is made a piracy by municipal statutes, and was not
    such by the law of nations, cannot be tried by the courts of the
    United States, if committed by a foreigner on board a foreign
    vessel, on the high seas; because the jurisdiction of the United
    States, beyond their own territorial limits, only extends to the
    punishment of crimes which are piracy by the law of nations.").
    - 37 -
    national authorities had interdicted in accord with international
    law.    Thus,      in    the    majority's     view,   Aybar   was   within   the
    territorial jurisdiction of the United States when he violated the
    MDLEA no less than if he had been on a ship flying our nation's
    flag.   See Slip Op. 4-5, 10-14.               For that reason, the majority
    concludes, the premise on which Aybar's constitutional challenge
    rests -- that he violated the MDLEA while he was outside the
    territorial jurisdiction of the United States -- is mistaken.                 See
    
    id. at 33-34
    .
    I   do     not    disagree   with   the   majority   that   Aybar's
    constitutional challenge must be rejected.                I write separately,
    however, because I reach that conclusion through a different,
    albeit somewhat related, line of reasoning.
    I.
    The majority observes that, under the law of nations, a
    foreign national on a U.S.-flagged vessel is within the territorial
    jurisdiction of the United States even when that vessel is in
    international waters.           
    Id. at 4-5, 14-15
    .     The majority also notes
    that, under the law of nations, a country's war or clearly marked
    law enforcement ship may board and search a vessel in international
    waters when there is adequate reason to suspect that the vessel is
    stateless.       
    Id. at 12-13
    ; see, e.g., Restatement (Third) of the
    Foreign Relations Law of the United States § 522(2)(b) & n.7 (1987)
    (hereinafter "Restatement (Third)") ("[A] warship or clearly-
    - 38 -
    marked    law   enforcement    ship    of   any   state   may     board . . .   a
    ship . . . if there is reason to suspect that the ship . . . is
    without    nationality";      "[a]    stateless    vessel    is    not   entitled
    to . . .    protection . . .         against      boarding    and     search.");
    Brownlie's Principles of Public International Law 285, 292 (James
    Crawford ed., 9th ed. 2019) (hereinafter "Brownlie's Principles")
    (noting statelessness as a "circumstance[] in which a warship may
    exercise the right of visit on the high seas"); Malcolm N. Shaw,
    International Law 457 (8th ed. 2017) ("A ship that is stateless,
    and does not fly a flag, may be boarded and seized on the high
    seas.").
    But, although the Third and Fourth Restatement of the
    Foreign Relations Law of the United States clearly establish the
    soundness of these twin propositions, see Restatement (Third)
    §§ 501 cmt. c, 502(2) & cmt. d, 522(2)(b) & n.7; Restatement
    (Fourth) of the Foreign Relations Law of the United States § 408
    cmt. b & n.3 (2018), I do not read them to go further and establish
    that the prevailing view of the law of nations is that the
    interdicting country acquires the same territorial jurisdiction
    over the vessel's occupants as it acquires over the vessel itself.
    In fact, as the majority recognizes, Slip Op. 19, experts in
    international law have long noted the disagreement that exists
    over that very view, even in the case in which the interdicting
    country's officials have boarded the vessel.                      See Brownlie's
    - 39 -
    Principles at 292 (noting "two schools of practice" on the question
    of exercising jurisdiction over stateless vessels, one of which is
    the U.S. practice that also permits criminal prosecution of those
    aboard and the other which requires "some further jurisdictional
    nexus,"    and   explaining    that    the    latter       "position    [is]     more
    consistent with existing treaty practice"); Douglas Guilfoyle,
    "The High Seas," in The Oxford Handbook of the Law of the Sea 216,
    218 (Donald R. Rothwell et al. eds. 2015) ("[S]cholarly views vary"
    on "[t]he consequences of statelessness," and there are equally
    "divergent national . . . interpretations."); Douglas Guilfoyle,
    Shipping    Interdiction      and   the     Law    of    the   Sea   17-18     (2009)
    (similar).   Nor have these commentators suggested that, insofar as
    there is a prevailing view in this debate, it is one that is at
    odds with the understanding that Aybar asks us to conclude that
    international law embraces.         See R.R. Churchill & A.V. Lowe, The
    Law of the Sea 214 (3d ed. 1999) ("[I]t has been held . . . that
    [stateless] ships enjoy the protection of no State," but the
    "better view appears to be that there is [still] a need for some
    [additional] jurisdictional nexus in order that a State may extend
    its laws to those on board a stateless ship and enforce the laws
    against    them."       (emphases     added));          Richard      Barnes,     "The
    International     Law    of   the     Sea    and        Migration    Control,"     in
    Extraterritorial Immigration Control:              Legal Challenges 130-33 (B.
    Ryan and V. Mitsilegas eds., 2010) (noting that "US jurisprudence"
    - 40 -
    notwithstanding,   "it   is   not   at   all   clear   that   attempts   to
    circumvent the requirement for a jurisdictional nexus . . . would
    be consistent with the law of the sea"; "the fact that right of
    visit and matters of enforcement are treated separately in the
    [United Nations Convention on the Law of the Sea] suggests that a
    positive right of visit does not imply wider enforcement powers").
    Thus, insofar as the majority's understanding of the
    scope of territorial jurisdiction over Aybar under the law of
    nations is tied to the fact that the stateless vessel that he was
    on had been seized and boarded by the United States' authorities
    in the course of their attempt to determine the nation (if any) to
    which the vessel belonged, see Slip Op. 19 n.3, 33, I cannot find
    any clear support for that understanding in either the pertinent
    Restatements or the relevant learned commentary.              I should add
    that I also am not aware of any precedent from U.S. courts that
    would provide such support.
    There is precedent from our country's courts that stakes
    out a more expansive view of territorial jurisdiction under the
    law of nations than Aybar would have us countenance.             But, that
    precedent, as I read it, does not tie that more expansive view to
    a showing that the officials from the nation that is claiming
    territorial jurisdiction over the foreign national on a stateless
    vessel in international waters had seized and boarded the vessel
    in question pursuant to their recognized right under international
    - 41 -
    law to determine its status.           Rather, that precedent appears to
    hold that foreign nationals on stateless vessels in international
    waters are subject to domestic prosecution by the United States
    for their conduct on board them pursuant to an assertion of the
    United States' territorial jurisdiction simply because there is
    support for all nations exercising such jurisdiction over vessels
    that are both stateless and in such waters.                 See, e.g., United
    States v. Rendon, 
    354 F.3d 1320
    , 1325 (11th Cir. 2003) ("Because
    stateless    vessels      do   not   fall   within   the    veil    of   another
    sovereign's territorial protection, all nations can treat them as
    their own territory and subject them to their laws." (quoting
    United States v. Caicedo, 
    47 F.3d 370
    , 373 (9th Cir. 1995)));
    Caicedo,    
    47 F.3d at 373
       ("Such   vessels      are   'international
    pariahs' . . . [and] subject themselves to the jurisdiction of all
    nations    'solely   as    a   consequence    of   the   vessel's    status   as
    stateless.'" (quoting United States v. Marino-Garcia, 
    679 F.2d 1373
    , 1382-83 (11th Cir. 1982))); United States v. Victoria, 
    876 F.2d 1009
    , 1010 (1st Cir. 1989) (Breyer, J.) ("[A]s United States
    courts have interpreted international law, that law gives the
    'United States authority to treat stateless vessels as if they
    were its own.'" (alteration omitted) (quoting United States v.
    Smith, 
    680 F.2d 255
    , 258 (1st Cir. 1982))); United States v. Pinto-
    Meija, 
    720 F.2d 248
    , 260-61 (2d Cir. 1983) ("[S]tateless vessels
    - 42 -
    on the high seas are, by virtue of their statelessness, subject to
    the jurisdiction of the United States.").
    For these reasons, I see no clear support in either case
    law or commentary for the comparatively modest proposition that
    persons on stateless vessels that a foreign country's officials
    have seized and boarded pursuant to their recognized right to visit
    it are subject to that country's territorial jurisdiction under
    international     law.       Instead,      I     find   no   judicial    precedent
    supporting that particular proposition, and much debate within the
    relevant commentary about its soundness.
    There is another reason that prevents me from signing on
    to the majority's analysis.         This reason has to do with the fact
    that I understand the MDLEA to have been premised on a broader
    theory of territorial jurisdiction under the law of nations than
    the majority is willing to embrace.                 That broader theory makes
    neither the physical presence of our authorities on a stateless
    vessel in the high seas or those authorities' interaction with
    that vessel of any legal significance in determining whether the
    occupants on that vessel come within our country's territorial
    jurisdiction.        Instead, that broader theory makes the fact that
    the occupants are on a vessel that is both stateless and in
    international waters in and of itself the reason that their conduct
    while   on   board    may   be   said    to    occur    within   the   territorial
    jurisdiction of the United States.                 The notion that this more
    - 43 -
    expansive theory of territorial jurisdiction under international
    law grounds the MDLEA finds support in the text of the statute
    itself.   The MDLEA expressly criminalizes drug trafficking on any
    "vessel subject to the jurisdiction of the United States," 
    46 U.S.C. § 70503
    (e)(1), and then proceeds to define such vessels
    expansively to "include[]" not just those whose crews fail to make
    a claim that they belong to another nation "on request of an
    officer of the United States," 
    id.
     § 70502(d)(1)(B) (deeming such
    vessels to be "without nationality," i.e., stateless), but also
    those vessels aboard which the crew's "claim of registry . . . is
    denied" or is "not affirmatively and unequivocally" affirmed "by
    the nation whose registry is claimed," without reference to a
    request   being   made   by   a   United    States   officer   at   all,    id.
    § 70502(d)(1)(A), (C) (same). In these respects, the MDLEA notably
    fails to make the fact that U.S. authorities either have boarded
    the vessel or even interacted with the vessel's crew at the time
    of the commission of the offense a precondition for the vessel
    being subject to the jurisdiction of the United States.                    As a
    result, the MDLEA, by its terms, appears to make the bare fact
    that a foreign national engages in drug trafficking while on a
    stateless vessel in international waters a trigger for subjecting
    the foreign national to the reach of our domestic criminal laws.
    To be sure, Aybar does not dispute on appeal that his
    vessel was in fact boarded by the U.S. authorities who interdicted
    - 44 -
    it.   But, it is not evident to me that the jurisdictional basis
    for his MDLEA conviction was premised on any such finding, as it
    is not evident to me that any legal significance was attributed to
    that fact in convicting him of violating the MDLEA.8
    For that reason, it is not surprising to me that the
    government     describes   the   question   concerning   the   scope   of
    8Aybar's indictment charging him with drug trafficking under
    the MDLEA mentioned only that he did so "on board a vessel subject
    to the jurisdiction of the United States; that is, a vessel without
    nationality," without noting the physical presence of U.S.
    officials on board the vessel at the time of the offense (or even
    any U.S. "interaction" with the vessel or the crew), and he did
    not admit to the vessel having been boarded in pleading guilty to
    the offense charged in the indictment, as he was not asked to do
    so, given that none of the elements of the offense made the fact
    of the boarding of legal relevance to his commission of it. The
    government's submissions to the District Court concerning whether
    Aybar was on board a vessel subject to U.S. jurisdiction, moreover,
    did not purport to make the finding that he was dependent on the
    fact of the vessel having been boarded by such officials. Finally,
    the District Court rejected Aybar's constitutional challenge on
    the ground that the United States had territorial jurisdiction
    over him while he possessed the cocaine at issue without purporting
    to premise that conclusion on the fact that U.S. officials had
    actually boarded his vessel. Thus, I am dubious that a conclusion
    that his conviction may be affirmed against this international-
    law-based constitutional challenge to Congress's Article I power
    is sustainable on the basis of the vessel having been boarded
    rather than on the more expansive theory that made his presence on
    a stateless vessel in international waters itself dispositive of
    whether he was subject to our nation's jurisdiction. Cf. United
    States v. Lopez, 
    514 U.S. 549
    , 559 (1995) (holding that the Gun-
    Free School Zones Act "exceeds the authority of Congress to
    'regulate Commerce'" as it "neither regulates a commercial
    activity nor" "contains [a] jurisdictional element which would
    ensure, through case-by-case inquiry, that the firearm possession
    in question affects interstate commerce" (emphasis added) (quoting
    U.S. Const. Art. I § 8 cl. 3)); Richard H. Fallon, Jr., As-Applied
    and Facial Challenges and Third-Party Standing, 
    113 Harv. L. Rev. 1321
    , 1332-34 (2000).
    - 45 -
    territorial jurisdiction that Aybar's constitutional challenge to
    his MDLEA conviction implicates in terms that render both the
    physical presence of our authorities on his vessel and their
    interaction with it legally irrelevant.      In fact, it would be
    surprising to me if the government were to embrace the view that,
    to ensure that the MDLEA would be enforced against a foreign
    national consonant with the law of nations, our law enforcement
    authorities must board the defendant's vessel (or even make contact
    with it) while he is both on it and in possession of the drugs.
    Such a view would appear to require the conclusion that our
    government could avoid flouting the law of nations in enforcing
    the MDLEA only by accepting that a foreign national on a stateless
    vessel on the high seas could protect himself from the statute's
    reach merely by dumping contraband from his vessel (stateless
    though it is conceded to be) as soon as a ship carrying our
    country's law enforcement personnel is in view.   Yet, in fact, the
    government has enforced the MDLEA even when the defendant had
    finished possessing the drugs at issue before U.S. authorities had
    made any contact with the stateless vessel on which the offense
    had occurred.   See, e.g., Rendon, 354 F.3d at 1322–23; Caicedo, 
    47 F.3d at 371
    .
    Of course, the fact that the government makes this
    broader assertion of territorial jurisdiction in asking us to
    reject Aybar's constitutional challenge does not mean that the
    - 46 -
    government's view of the scope of the United States' territorial
    jurisdiction under international law is correct.              The Restatements
    and commentary described above provide no clear support for the
    notion that, under the law of nations, all countries are entitled
    to assert territorial jurisdiction over any foreign national in
    international waters who is on board a vessel that is stateless
    simply because that vessel is in those waters and does not belong
    to any nation.       In fact, as I have explained, those materials do
    not even provide clear support for the relatively narrower but
    still broad proposition that a nation that exercises its right to
    visit   a   vessel   in   international       waters   that   it   suspects   is
    stateless automatically acquires the right to assert domestic
    criminal     jurisdiction     over     that     vessel's      foreign-national
    occupants.
    I have noted above that a number of United States Circuit
    Courts have endorsed the view that, under the law of nations, a
    person's presence on a stateless vessel in international waters is
    in itself enough to make that person subject to a foreign nation's
    domestic criminal laws for the conduct in which he engages while
    on board -- if, that is, the nation chooses to apply those laws to
    him.    See, e.g., Rendon, 354 F.3d at 1325; Caicedo, 
    47 F.3d at 372
    ; Pinto-Mejia, 720 F.2d at 260-61.           Thus, it is true that these
    courts have signed on to the government's expansive view of
    territorial jurisdiction under the law of nations.
    - 47 -
    But, in doing so, these courts have supported that view
    merely by citing to other circuit-level precedents, see, e.g.,
    Rendon, 354 F.3d at 1325; Caicedo, 
    47 F.3d at 372
    ; Victoria, 
    876 F.2d at 1010-11
    , or by treating international law authorities that
    clearly establish that a nation has territorial jurisdiction over
    a vessel in international waters that is stateless as if such
    authorities      also   establish      that    a   nation    has    territorial
    jurisdiction over the foreign nationals who are on such a vessel,
    see Pinto-Mejia, 720 F.2d at 260-61; Marino-Garcia, 
    679 F.2d at 1382-83
    ; Smith, 
    680 F.2d at 258
    .              For that reason, I do not see
    how these precedents help to demonstrate that the law of nations
    is what the government says it is.
    II.
    The lack of clear authority for either the government's
    (or the majority's more modest but still broad) view of territorial
    jurisdiction under the law of nations does not necessarily compel
    us   to   hold   that   the   United   States      lacks   the   constitutional
    authority to extend the MDLEA to Aybar's conduct.                Even if we were
    to assume that the law of nations places limits on Congress's power
    under the Define and Punish Clause to subject foreign nationals on
    foreign vessels in international waters to our domestic criminal
    laws, and even if we were to assume that the United States may not
    assert    protective    jurisdiction      over     drug    trafficking   merely
    because it occurs on stateless vessels in international waters,
    - 48 -
    see Robinson, 
    843 F.2d at 3-4
    , it still may be that we are in no
    position to conclude that the application of the MDLEA to Aybar's
    conduct in this case would violate international law -- and thus
    in no position to conclude that such application would transgress
    Article I.
    A rule of international law that would insulate foreign
    nationals on stateless vessels on the high seas from domestic
    criminal jurisdiction would raise practical difficulties for law
    enforcement authorities -- and not only for those from our country.
    See Slip Op. 20-21.    In light of those difficulties and the degree
    of legal uncertainty that exists in this realm, it may be that it
    would be proper for us to defer to our political branches' judgment
    as to what the law of nations permits here.9    Cf. United States v.
    9 Much like Congress in the MDLEA, the Executive Branch has
    before taken the position that our laws may punish drug trafficking
    by foreign nationals aboard stateless vessels in the high seas
    consistently with international law. See, e.g., Stopping "Mother
    Ships" -- A Loophole in Drug Enforcement:       Hearing on S. 3437
    Before the Subcomm. to Investigate Juvenile Delinquency of the H.
    Comm. on the Judiciary, 95th Cong. 28 (1978) (statement of Morris
    Busby, Acting Deputy Assistant Secretary, Dep't of St. Off. of
    Oceans Aff.) (explaining in supporting a precursor bill to the
    MDLEA that "making it a crime to possess drugs on the high seas
    with an intent to distribute, whether or not the intent was to
    distribute the[] drugs in the United States" "where you have a
    ship without any nationality on the high seas" "would comport with
    international law"); Coast Guard Drug Law Enforcement: Hearing on
    H.R. 2538 Before the Subcomm. on Coast Guard and Navigation of the
    H. Comm. on Merchant Marine and Fisheries, 96th Cong. 55 (1979)
    (statement of Morris Busby, Director, Dep't of St. Off. of Ocean
    Aff.) (elaborating that international law did, in his Department's
    view, create "an exception which allows us to board a vessel on
    the high seas which is without nationality," and further
    - 49 -
    Smith, 18 U.S. (5 Wheat.) 153, 159 (1820) (explaining that "there
    is a peculiar fitness in giving the power to define as well as to
    punish; and there is not the slightest reason to doubt that this
    consideration had very great weight in producing the phraseology
    in question"); id. at 169-72 (Livingston, J., dissenting) ("The
    special power here given to define . . ., can be attributed to no
    other cause, than to the uncertainty . . . in the law of nations,
    and which it must have been the intention of the framers of the
    constitution to remove, by conferring on the national legislature
    the power which has been mentioned.").
    It may also be that, as the majority suggests, see Slip
    Op. 19-21, there is a "general usage and practice of nations,"
    Smith, 18 U.S. (5 Wheat.) at 160-61, that supports the United
    States'   position.      Other    nations    do   not    appear     to    have
    affirmatively resisted our country's assertion of this expansive
    view of territorial jurisdiction, and we are dealing with the
    peculiar context of the high seas.          Perhaps, then, it would be
    prudent   to   reject   Aybar's    constitutional       challenge    to   his
    "recommend[ing] . . . that [the United States] make it a
    [prosecutable] violation for [drug trafficking] to occur on board
    a vessel which is stateless"; "[w]hile ordinarily the United States
    does not favor a unilateral extension of jurisdiction . . . over
    the activities of non-U.S. citizens on board stateless vessels
    without proof of some connection to the United States, the serious
    nature of [the drug trafficking] problem, and the fact that persons
    on board these stateless vessels [generally] are engaged in
    narcotics trafficking aimed at the United States, warrant an
    extension in this particular case.").
    - 50 -
    conviction for this additional reason, notwithstanding that the
    evidence before us of this practice consists chiefly of what other
    nations have not done in response to what ours has.            See Andrew W.
    Anderson, Jurisdiction over Stateless Vessels on the High Seas:
    An Appraisal under Domestic and International Law, 
    13 J. Mar. L. & Com. 323
    , 331-32 (1982); Myres S. McDougal, The Law of the High
    Seas in Time of Peace, 26 Naval War C. Rev. 35, 36 (1973); Myres
    S. McDougal & William T. Burke, The Public Order of the Oceans:            A
    Contemporary International Law of the Sea 1047 (1962).
    But,   I   am   wary   of    rejecting   Aybar's   constitutional
    challenge by relying on either a principle of deference to the
    political branches that I am not sure obtains or a state practice
    that is based only on the limited evidence of it that we have here.
    Rather, I conclude that we -- as a lower court -- must reject it
    due to the guidance supplied by the more than two-century-old
    Supreme Court precedent to which the majority gives great weight
    but ultimately concludes fails to dictate how we must decide this
    case.   See Slip Op. 15-19.
    III.
    That precedent, United States v. Holmes, 18 U.S. (5
    Wheat.) 412 (1820), was among the cases that the Supreme Court
    decided just decades after the Constitution's ratification and
    that are sometimes referred to as the "piracy cases," G. Edward
    White, The Marshall Court and International Law: The Piracy Cases,
    - 51 -
    83 Am. J. Int'l L. 727 (1989).         The cases in this line of authority
    dealt with the United States' power to prosecute defendants of a
    range of citizenships and circumstances who shared the attribute
    of having been indicted in our country pursuant to our criminal
    justice system for murder, robbery, or other wrongdoing on the
    high seas.      See Holmes, 18 U.S. (5 Wheat.) 412; Furlong, 18 U.S.
    (5 Wheat.) 184; Smith, 18 U.S. (5 Wheat.) 153; United States v.
    Klintock, 18 U.S. (5 Wheat.) 144 (1820); United States v. Palmer,
    16 U.S. (3 Wheat.) 610 (1818).
    These cases were decided amidst the then-swirling debate
    over whether the law of nations permitted the United States to
    assert domestic criminal jurisdiction over foreign nationals who
    committed crimes while on the high seas.         Compare United States v.
    Robins, 
    27 F. Cas. 825
    , 832 (D.S.C. 1799) ("There is no doubt that
    the   circuit    courts   of    the   United   States    have   a   concurrent
    jurisdiction" that allows the U.S. government to prosecute the
    offense of murder aboard a British ship on the high seas, "and
    this arises under the general law of nations."), with Speech of
    John Marshall at 598-99 ("It is not true that all nations have
    jurisdiction     over   all    offenses   committed     at   sea. . . . [T]he
    jurisdiction of th[is] nation cannot extend to a murder committed
    by a British sailor, on board a British frigate navigating the
    high seas under a commission from his Britannic majesty. . . . It
    follows that no such common jurisdiction exists.").                 And Holmes
    - 52 -
    itself implicated that debate, as it concerned a challenge to the
    legal basis for a U.S. criminal prosecution of three defendants
    -- two foreigners and one U.S. citizen -- who had been indicted
    for knifing and throwing overboard an individual while they were
    on a vessel on the high seas that did not belong to the United
    States.    See Holmes, 18 U.S. (5 Wheat.) at 412-13; see also The
    Trial of William Holmes, Thomas Warrington, and Edward Rosewain on
    an Indictment for Murder on the High Seas Before the Circuit Court
    of the United States 5 (Boston, Joseph C. Spear 1820) (hereinafter
    "The Holmes Trial").
    Specifically,       Holmes   posed    the     following      question:
    when, if ever, is "murder" by a foreign national "committed on the
    high seas, . . . an offence cognizable by the Courts of the United
    States"?    Holmes, 18 U.S. (5 Wheat.) at 417.                  The Supreme Court
    answered as follows.
    The    Court     first   observed    that,    if     the   murder    "be
    committed on board of a foreign vessel by a citizen of the United
    States, or on board of a vessel of the United States by a foreigner,
    the offender is to be considered . . . as belonging to the nation
    under whose flag he sails."           
    Id. at 417
     (emphasis added).              But,
    the Court then continued, there would be jurisdiction in our
    nation's courts over such a prosecution "if [the vessel] had no
    national character, but was possessed and held by pirates, or
    persons    not    lawfully    sailing    under   the     flag    of    any   foreign
    - 53 -
    nations."    
    Id.
     (emphasis added).   And, the Court reiterated this
    same understanding in the certificate,10 explaining:     "the said
    Circuit Court had jurisdiction of the offence charged in the
    indictment [i.e., murder], if the vessel, on board of which it was
    committed, had, at the time of the commission thereof, no real
    national character but was possessed and held by pirates, or by
    persons not lawfully sailing under the flag, or entitled to the
    protection of any government whatsoever."     
    Id. at 419
     (emphasis
    added).
    Holmes appears to state, then, that a foreign national
    is subject to the domestic criminal jurisdiction of the United
    States if he commits a felony while on a vessel on the high seas
    that is "not lawfully sailing under the flag of any foreign
    nation."    
    Id. at 417
     (emphasis added).   For this reason, Holmes
    appears to sink Aybar's constitutional challenge -- by rejecting
    the view that a stateless vessel in international waters is a
    foreign vessel, and by supporting the view that international law
    does not bar a nation from extending its domestic criminal laws to
    persons who are engaged in felonious conduct on board vessels
    10The "Certificate" "blend[ed] the views of all the justices
    together on the broadest common position." Alfred P. Rubin, The
    Law of Piracy 141 (1988).
    - 54 -
    lacking    any    national    character     while    those     vessels     are   in
    international waters.11
    Recognizing the potential threat that Holmes presents,
    Aybar seeks to keep his challenge afloat in the following way.                   He
    argues that Holmes is best read to address only the extent of
    Congress's power to regulate the conduct of "piracy committed
    either by a citizen or a foreigner . . . based on the universal
    jurisdiction      of   piracy."      Accordingly,        he    contends,     Holmes
    supplies    no   support     for   concluding     that   the    law   of   nations
    permitted   his    prosecution      under   the   MDLEA,      given   that   "drug
    trafficking is not understood to be a universal jurisdiction
    offense."
    The problem for Aybar is that the predicate offense in
    the foreign nationals' indictment in Holmes was "murder."                  18 U.S.
    (5 Wheat.) at 413.           That is significant because it was well
    understood at the time that general piracy was "rob[bery] . . . on
    the high seas" and that this single category of piracy offense
    was, under the law of nations, "punishable by all" -- but "[n]o
    particular nation can increase or diminish the list of offences
    thus punishable."      Speech of John Marshall at 600; see also Smith,
    11 It is worth noting that the Holmes defendants were
    apprehended only after they eventually sailed their ship into a
    harbor in Scituate, Massachusetts; there is no indication that
    U.S. officials were aboard or interacted with the vessel at the
    time of the murder. See The Holmes Trial at 6.
    - 55 -
    18 U.S. (5 Wheat.) at 162 ("[T]he offence [of general piracy] is
    supposed to depend, not upon the particular provisions of any
    municipal   code,   but   upon   the    law   of   nations,   both   for   its
    definition and punishment.").          Thus, because the charged offense
    at issue in Holmes was murder on the high seas rather than robbery
    on the high seas, there is little basis for concluding that the
    Court understood the foreign national defendants there to have
    been charged with general piracy -- and thus with a universal
    jurisdiction offense -- rather than with merely a domestic felony.
    That the statute of conviction in Holmes provided that
    "if any person . . . shall commit, upon the high seas, . . .
    murder . . . every such offender shall be deemed, taken, and
    adjudged to be, a pirate and felon, and being thereof convicted,
    shall suffer death," Act of April 30th, 1790, for the Punishment
    of Certain Crimes Against the United States, ch. 9 § 8, 
    1 Stat. 113
       (emphasis   added),   does    not   suggest    otherwise.      It    was
    understood at the time that "[a] statute may make any offence
    piracy, committed within the jurisdiction of the nation passing
    the statute, and such offence will be punishable by that nation"
    -- but, unless the statutory offense was general piracy, "[t]he
    jurisdiction of the nation is [here] confined to its territory and
    to its own subjects."        Speech of John Marshall at 600, 602
    (emphases added); see also 
    id. at 600-01
     (rejecting the notion
    that all "piracies at common law" are "punishable by every nation,"
    - 56 -
    and explaining that a statute might punish murder or other crimes
    as piracy, but such a "municipal regulation could not be considered
    as proving that those offences were . . . piracy by the law of
    nations"); Eugene Kontorovich, The "Define and Punish" Clause and
    the Limits of Universal Jurisdiction, 
    103 Nw. U. L. Rev. 149
    , 167
    (2009) (explaining the then-familiar understanding that general
    piracy and municipal piracy were not equivalent).
    Nor is there anything in Holmes that indicates that the
    Court understood the offense of murder that was at issue --
    denominated though it was in the underlying federal criminal
    statute as a species of piracy -- to constitute "general" rather
    than   "municipal"   piracy.   In   fact,   during   the   sentencing
    proceedings in Holmes, Justice Story, who not only participated in
    the case at the Supreme Court but also, while riding circuit, below
    in the First Circuit, referenced the defendants' mutiny aboard the
    vessel in question -- noting that the knifing had been part of a
    plan to seize control of the ship -- and informed the offenders
    that their conduct could have been indicted as a form of general
    piracy.   See The Holmes Trial at 16-17.    But, Justice Story made
    clear, the offense of murder on the high seas, for which the
    defendants had been indicted, was not itself such an offense.
    Indeed, he contrasted that offense with robbery on the high seas,
    which he concluded the defendants could have been indicted for in
    consequence of their "piratical usurpation and seizure of the
    - 57 -
    vessel," and which would have "left [them] only the character of
    general pirates and enemies of the human race, who had thrown off
    allegiance to all nations, and were justly amenable for [their]
    crime to the tribunal of all."        The Holmes Trial at 16-17; see
    also Report on the Trial of Samuel Tulley and John Dalton, on an
    Indictment for Piracy and Murder, Committed January 21st, 1812,
    Before the Circuit Court of the United States 30-31, 33 (Boston,
    J. Belcher 1812) (reporting a decision by Judge Davis, in which
    Justice Story concurred, which noted that "[t]he description of
    the offense [of piracy] in the first part of the 8th Section of
    [the Act of 1790] is analogous to the common law description" of
    piracy, as distinct from "piracy by the law of nations").
    I do recognize that Holmes refers at one point to the
    vessel that the defendants were on as being "piratical."           18 U.S.
    (5 Wheat.) at 417.   But, this reference also does not help Aybar
    in his attempt to show that Holmes fails to undermine the basis
    for his constitutional challenge to his conviction.
    In   describing   the   vessel   from   which    the   defendants
    committed the charged offense as "piratical," Holmes was not
    purporting to describe the nature of the defendants' charged
    offense as one that constituted general piracy.           As we have seen,
    it was understood by those involved -- Justice Story among them
    -- that the offense did not qualify as such.          Holmes was simply
    explaining why the vessel that the defendants had been on in the
    - 58 -
    high seas was fairly deemed to have no national character, or,
    otherwise put, to be stateless as opposed to foreign, such that
    the United States could subject those aboard to our laws.   For, a
    description of the evidence presented during the proceedings below
    reveals that the vessel on which the defendants had been when
    committing the murder on the high seas had earlier been unlawfully
    captured in those waters by pirate ships, at least if one followed
    the Court in disbelieving testimony that the seizing ships "were
    publicly fitted out at Buenos Ayres" and intended to "molest[]
    none but Spanish vessels."   The Holmes Trial at 5, 7-8, 12; see
    Eugene Kontorovich, Beyond the Article I Horizon:       Congress's
    Enumerated Powers and Universal Jurisdiction over Drug Crimes, 
    93 Minn. L. Rev. 1191
    , 1228 (2009) (arguing that the vessel in Holmes
    was "stateless by virtue of 'turning pirate'"); see also Talbot v.
    Jansen, 3 U.S. (3 Dall.) 133, 159 (1795) (opinion of Iredell, J.)
    ("[If] upon the enquiry it shall appear, that the vessel pretending
    to be a lawful privateer, is really not such, but uses a colourable
    commission for the purposes of plunder, she is to be considered by
    the law of nations . . . in the same light as having no commission
    at all."); The Holmes Trial at 10-11 ("If a murder be committed on
    board of a ship having no national character, as on board of ships
    owned and possessed by pirates, it is within the statute, if the
    ship be on the high seas when the crime is perpetrated. . . .
    Palmer's case goes only to exclude the operation of the statute,
    - 59 -
    in cases where other nations have an exclusive jurisdiction.");
    cf. Palmer, 16 U.S. (3 Wheat.) at 632-33 ("The[r]e are offences
    against [a] nation under whose flag the vessel sails, and within
    whose particular jurisdiction all on board the vessel are.               Every
    nation provides for such offences the punishment its own policy
    may   dictate;   and   no   general   words   of   a   statute   ought   to be
    construed to embrace them when committed by foreigners against a
    foreign government." (emphasis added)).12
    Moreover, Aybar, who has waived any challenge to whether
    his vessel was actually stateless, makes no argument to us that
    the statelessness of a vessel in international waters permits the
    foreign national aboard it to be subjected to our domestic criminal
    See Letter from John Quincy Adams, U.S. Sec'y of State, to
    12
    Francisco Dionisio Vives, Ambassador of Spain to the U.S. (May 3,
    1820), reprinted in 5 Wheat. App. 154 (1820) (explaining that "[i]n
    the existing unfortunate civil war between Spain and the South
    American Provinces, the United States have constantly avowed, and
    faithfully maintained, an impartial neutrality," although the
    United States would -- and did -- prosecute "individuals guilty of
    piracy" that "illegally captured" "Spanish property" (emphasis
    added)); The Holmes Trial at 11 (reporting Justice Story's charge
    to the jury that "[i]f at the time when the crime was
    committed, . . . this vessel was under the exclusive jurisdiction
    of the Government of Buenos Ayres, then the statute does not reach
    the case [of murder aboard a foreign-flagged ship], and the
    Prisoners ought to be acquitted. And this depends on the fact,
    whether the capture was made by the privateers, under any authority
    derived from the Government of Buenos Ayres as a belligerent and
    independent nation . . . [and] sailed rightfully under its
    flag . . . [as this would mean] the capture was rightful, and the
    captured vessel immediately after the capture, may be justly deemed
    to have been exclusively under the jurisdiction of the Government
    of Buenos Ayres.").
    - 60 -
    laws consistent with the law of nations only if the vessel is
    stateless by virtue of it having engaged in conduct that qualifies
    as general piracy.   Aybar instead argues to us only that there is
    an important distinction to be drawn under the law of nations
    between offenses that are of universal jurisdiction and offenses
    that are not, and that the offense for which he was charged --
    drug trafficking -- is of the latter kind.
    Thus, the fact that Holmes deemed the foreign nationals
    who were the defendants in that case to be on a vessel lacking
    national character because it was piratical lends little aid to
    Aybar's cause.   The offense that was at issue in Holmes was a mere
    domestic felony, just like his, and it occurred on a vessel that
    was stateless, just like his.13
    13 Interestingly, in his charge to the jury, Justice Story
    explained that the defendants could even be prosecuted if they had
    committed the murder while aboard no ship:
    The statute refers as to locality to "the high
    seas" only, and it would be far too narrow a
    construction, to limit its operation to crimes
    committed on board of ships or vessels.
    Murder may be committed on the high seas when
    neither the murderer, or the murdered is on
    board of any ship or vessel. A man may in the
    sea murder another who is in the sea swimming,
    or on a plank or raft; and it is obvious, that
    when the death is by drowning, the murder is
    committed literally on the high seas, wherever
    the murderer may at the time be. . . . We see
    no reason in a case of this sort, where the
    murder is committed actually in the sea, why
    the case which is within the literal terms of
    the statute, should not be held within its
    purview, whether the murder were committed by
    - 61 -
    Aybar also makes no argument to us that even if Holmes
    did take an expansive view of the United States' authority to
    assert   domestic   criminal   jurisdiction   over   foreign   nationals
    engaged in felonious conduct on a stateless vessel on the high
    seas, intervening developments in international law preclude us
    from construing Article I's Define and Punish Clause to permit
    Congress to rely on that power to enact this criminal statute on
    the understanding of the law of nations that Holmes embraced.        His
    a citizen on a citizen, or by a foreigner on
    a citizen, or by a foreigner on a foreigner.
    Such a case is not within the reason of
    Palmer's case.   Every nation has concurrent
    jurisdiction with every other nation on the
    high seas; and when a crime is committed on
    the high seas, not on board of any ship or
    vessel, it is not exclusively within the
    jurisdiction of any nation; and every nation
    may, if it choose, punish such crime without
    doing any wrong to either nation.
    The Holmes Trial at 10 (emphasis added).             In   Homes   itself,
    moreover, the Supreme Court agreed that
    it makes no difference whether the offence was
    committed on board of a vessel, or in the sea,
    as by throwing the deceased overboard and
    drowning him, or by shooting him when in the
    sea, though he was not thrown overboard. The
    words of the above act of Congress are
    general, and speak of certain offences
    committed   upon   the  high   seas,   without
    reference to any vessel whatsoever on which
    they should be committed; and no reason is
    perceived why a more restricted meaning should
    be given to the expressions of the law, than
    they literally import.
    18 U.S. (5 Wheat.) at 418 (emphasis added).
    - 62 -
    only contention regarding Holmes is that it did not embrace that
    understanding of the law of nations even then.
    IV.
    For these reasons, I am convinced that Holmes requires
    that   we    conclude     that   the    Define    and    Punish   Clause    is   best
    understood not to contain an implicit limit that would prevent the
    United      States   from   prosecuting        foreign     nationals    for      their
    felonious conduct on stateless vessels in international waters.
    The founding generation was attentive to the strictures of the law
    of nations.      See David M. Golove & Daniel J. Hulsebosch, The Law
    of Nations and the Constitution:           An Early Modern Perspective, 106
    Geo. L. J. 1593, 1595-96 (2018) (describing "the prominent place
    of the law of nations in the constitutional reform project that
    culminated in the Philadelphia Convention").                    And so, as between
    the    uncertain     or   even   skeptical       views    of    more   contemporary
    commentators on the law of nations and the seemingly unqualified
    statements of the Supreme Court in Holmes, I am persuaded that the
    latter must control our judgment as a lower court in this case --
    at least given that state practice is not clearly contrary to what
    the political branches of our country assert it to be.                   See United
    Nurses & Allied Prof'ls v. Nat'l Labor Rels. Bd., 
    975 F.3d 34
    , 40
    (1st     Cir.   2020)     ("We    are     bound    by     the     Supreme   Court's
    'considered dicta.'" (quoting McCoy v. Mass. Inst. of Tech., 
    950 F.2d 13
    , 19 (1st Cir. 1991))).
    - 63 -
    Accordingly, I would affirm Aybar's conviction against
    his constitutional challenge to Congress's exercise of its Article
    I power on the basis of Holmes, while leaving all other questions
    -- including whether and when MDLEA prosecutions comport with the
    Fifth Amendment's Due Process Clause -- for a case in which they
    are properly raised.    I do note, though, that while I reach the
    same destination as the majority, the route that I take to get
    there may bear on the proper answer to at least one question that
    the case before us does not require us to resolve.
    I do not dispute the majority's observation that "fair
    warning has certainly been given" that drug trafficking is commonly
    outlawed.    Slip Op. 32.   But, there is potentially a separate
    notice question concerning whether "fair warning" exists as to
    where that commonly outlawed offense may be prosecuted.   Cf. Int'l
    Shoe v. Washington, 
    326 U.S. 310
    , 316 (1945) ("[D]ue process
    requires . . . that, in order to subject a defendant to a judgment
    in personam, if he be not present within the territory of the
    forum, he have certain minimum contacts with it . . . .").
    It is not clear to me that our own Supreme Court's
    precedent (let alone precedents from lower U.S. courts such as
    ours) as to the scope of valid congressional power over misconduct
    by foreign nationals on stateless vessels on the high seas could
    supply fair warning on the "where" question to a foreign national.
    At least, I am not sure that it could do so if other authoritative
    - 64 -
    sources for determining the content of the law of nations -- ones
    not generated solely by a single country's legal system -- do not
    themselves     provide    fair   warning   that   all   nations   possess
    territorial jurisdiction over the conduct of foreign nationals on
    board stateless vessels in international waters and thereby makes
    them potentially subject to prosecution in any nation under its
    domestic criminal laws.
    Aybar, however, does not pursue a due process challenge
    to his conviction.       I thus see no need to decide here whether the
    law of nations, uncertain though it appears to me to be in that
    respect, is nonetheless clear enough to provide a person who
    ventures into international waters in a stateless vessel the
    constitutionally requisite degree of warning of the risk of being
    prosecuted in a foreign forum for drug trafficking while on board
    that vessel.      Nor do I see any reason to decide in this case
    whether Holmes itself requires us to conclude that, despite what
    more modern commentary suggests, the law of nations is clear enough
    on that score to mitigate any notice concerns that might be of a
    constitutional magnitude.
    - 65 -
    

Document Info

Docket Number: 15-2377P2

Filed Date: 1/25/2021

Precedential Status: Precedential

Modified Date: 1/25/2021

Authorities (22)

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In Re Ross , 11 S. Ct. 897 ( 1891 )

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United States v. Peter Malcolm Davis , 905 F.2d 245 ( 1990 )

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United States v. Luis Alberto Victoria , 876 F.2d 1009 ( 1989 )

United States v. Nicomedes Martinez-Hidalgo , 993 F.2d 1052 ( 1993 )

International Shoe Co. v. Washington , 66 S. Ct. 154 ( 1945 )

United States v. Olaf Peter Juda Raymond Edward Missell ... , 46 F.3d 961 ( 1995 )

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James L. McCoy Administrator of the Electrical Workers ... , 950 F.2d 13 ( 1991 )

united-states-v-carlos-moreno-morillo-aka-carlos-moreno-moreo-united , 334 F.3d 819 ( 2003 )

united-states-v-esteban-marino-garcia-and-omar-chaverra-hernan , 679 F.2d 1373 ( 1982 )

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