United States v. Luis Mayea-Pulido ( 2020 )


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  •                        FOR PUBLICATION
    UNITED STATES COURT OF APPEALS
    FOR THE NINTH CIRCUIT
    UNITED STATES OF AMERICA,                      Nos. 18-50223
    Plaintiff-Appellee,                       18-50224
    v.                             D.C. Nos.
    3:18-cr-07021-WQH-1
    LUIS RICARDO MAYEA-                       3:17-cr-00560-WQH-1
    PULIDO, AKA Luis Ricardo
    Pulido,                                           OPINION
    Defendant-Appellant.
    Appeal from the United States District Court
    for the Southern District of California
    William Q. Hayes, District Judge, Presiding
    Argued and Submitted July 10, 2019
    Pasadena, California
    Filed January 3, 2020
    Before: Milan D. Smith, Jr. and Michelle T. Friedland,
    Circuit Judges, and Stanley A. Bastian, * District Judge.
    Opinion by Judge Friedland
    *
    The Honorable Stanley A. Bastian, United States District Judge for
    the Eastern District of Washington, sitting by designation.
    2             UNITED STATES V. MAYEA-PULIDO
    SUMMARY **
    Criminal Law/Immigration
    The panel affirmed a conviction for illegal reentry by a
    previously deported alien in violation of 
    8 U.S.C. § 1326
    ,
    and the revocation of supervised release, in a case in which
    the defendant argued that, by making his parents’ marital
    status a factor in the determination of derivative citizenship,
    
    8 U.S.C. § 1432
    (a) (1996) violates the Constitution’s equal
    protection guarantee.
    The defendant’s equal protection challenge focused on
    the difference between 
    8 U.S.C. § 1432
    (a)(1), which allows
    the child of parents who are not legally separated to derive
    citizenship only upon the naturalization of both parents, and
    the first clause of 
    8 U.S.C. § 1432
    (a)(3), which allows the
    child of legally separated parents to derive citizenship upon
    the naturalization of one parent if that parent has sole legal
    custody. The defendant argued that this statutory scheme
    impermissibly discriminates on the basis of parental marital
    status by allowing the children of legally separated parents
    to become U.S. citizens more easily than the children of non-
    separated parents.       He argued that he should have
    automatically become a United States citizen as a result of
    the naturalization of one of his parents prior to the reentry in
    question, and that, as a result, he is not an “alien” who could
    be guilty of violating § 1326.
    Barthelemy v. Ashcroft, 
    329 F.3d 1062
     (9th Cir. 2003),
    rejected a similar equal protection challenge to § 1432(a).
    **
    This summary constitutes no part of the opinion of the court. It
    has been prepared by court staff for the convenience of the reader.
    UNITED STATES V. MAYEA-PULIDO                      3
    The defendant argued that Sessions v. Morales-Santana,
    
    137 S. Ct. 1678
     (2017), which held that a statutory scheme
    that imposed different requirements on unwed mothers and
    unwed fathers for conferring citizenship upon the birth of a
    child abroad denied equal protection, effectively overruled
    Barthelemy.
    The panel agreed with the defendant that Barthelemy’s
    justification for applying rational basis review—that
    immigration statutes must always be given deference and
    thus reviewed only for rationality—is clearly irreconcilable
    with Morales-Santana, which left open the possibility that a
    court may apply heightened scrutiny to a citizenship
    provision if there is otherwise a basis to do so. The panel
    held that for reasons separate and apart from those relied on
    in Barthelemy, rational basis review applies to § 1432(a)’s
    classifications of children based on their parents’ marital
    status at a time after their birth or on a parent’s custody status
    over them.
    Reviewing § 1432(a) for a rational basis, the panel wrote
    that it remains bound by the holding in Barthelemy that the
    statute survives that deferential standard; and that even if it
    were not bound by Barthelemy, it would conclude that
    § 1432(a) is rational because protecting the parental rights of
    the non-citizen parent is plainly a legitimate legislative
    purpose.
    4            UNITED STATES V. MAYEA-PULIDO
    COUNSEL
    Kara Hartzler (argued), Assistant Federal Public Defender,
    Federal Defenders of San Diego, Inc., San Diego, California,
    for Defendant-Appellant.
    Mark R. Rehe (argued), Assistant United States Attorney;
    Helen H. Hong, Assistant United States Attorney, Chief,
    Appellate Section, Criminal Division; Robert S. Brewer, Jr.,
    United States Attorney; United States Attorney’s Office; San
    Diego, California; for Plaintiff-Appellee.
    OPINION
    FRIEDLAND, Circuit Judge:
    Luis Mayea-Pulido challenges his conviction for illegal
    reentry, which he contends is invalid because he is not an
    “alien” who could be guilty of that crime. Mayea argues that
    he should have automatically become a United States citizen
    as a result of the naturalization of one of his parents prior to
    the reentry in question. But because his parents were
    married, and the derivative citizenship statute at 
    8 U.S.C. § 1432
    (a) (1996) required married parents to both naturalize
    to confer citizenship to their child, he did not become a
    citizen. Mayea argues that, by making his parents’ marital
    status a factor in the derivative citizenship determination,
    § 1432(a) violates the Constitution’s equal protection
    guarantee.        We previously upheld the statute’s
    constitutionality in Barthelemy v. Ashcroft, 
    329 F.3d 1062
    (9th Cir. 2003), but Mayea contends that the Supreme
    Court’s recent decision in Sessions v. Morales-Santana,
    
    137 S. Ct. 1678
     (2017), compels a different conclusion. We
    disagree and affirm Mayea’s conviction.
    UNITED STATES V. MAYEA-PULIDO                             5
    I.
    Luis Mayea-Pulido was born in 1978 in Mexico to two
    unmarried non-U.S. citizens. Mayea and his parents moved
    to the United States a few months after his birth, and his
    parents married in 1981. By the time Mayea was eight years
    old, his father was a naturalized U.S. citizen. Mayea
    eventually became a lawful permanent resident, but he never
    applied for citizenship. Mayea’s mother, who remained
    married to his father, also never applied for citizenship.
    At the time Mayea turned eighteen, 
    8 U.S.C. § 1432
    (1996) 1 governed whether a lawful permanent resident under
    the age of eighteen and born abroad to non-U.S.-citizen
    parents could derive U.S. citizenship from the subsequent
    naturalization of one or both parents. 
    Id.
     § 1432(a). As a
    general rule, a child lawfully residing in the United States
    automatically became a citizen if both of his or her parents
    naturalized before his or her eighteenth birthday. Id.
    § 1432(a)(1).
    There were three exceptions to this general rule. First, if
    the parents had married and then legally separated, only the
    parent “having legal custody of the child”—which we have
    interpreted to mean sole legal custody—needed to naturalize
    1
    Section 1432 was repealed in 2000 and replaced by a different
    provision governing automatic derivative citizenship. Child Citizenship
    Act of 2000, Pub. L. No. 106-395, §§ 101, 103, 
    114 Stat. 1631
    , 1631–
    33. Under that provision, either parent’s naturalization confers
    derivative citizenship on lawful permanent resident children under the
    age of eighteen who were born outside the United States. See 
    8 U.S.C. § 1431
    (a). But the new rule is not retroactively applicable to individuals,
    such as Mayea, who had already turned eighteen when the new statute
    went into effect. See Hughes v. Ashcroft, 
    255 F.3d 752
    , 760 (9th Cir.
    2001). All references to § 1432 herein are to the 1996 version, which
    was identical to the version repealed in 2000.
    6           UNITED STATES V. MAYEA-PULIDO
    for the child to derive citizenship. Id. § 1432(a)(3); see
    United States v. Casasola, 
    670 F.3d 1023
    , 1030–31 (9th Cir.
    2012) (holding that “legal custody” in the context of
    § 1432(a)(3) means sole legal custody). Second, if one
    parent was deceased, the naturalization of the surviving
    parent alone conferred citizenship. 
    8 U.S.C. § 1432
    (a)(2).
    Third, if “the child was born out of wedlock and the paternity
    of the child ha[d] not been established by legitimation,” the
    mother’s naturalization alone sufficed to confer citizenship.
    
    Id.
     § 1432(a)(3).
    Mayea did not derive citizenship under § 1432(a). The
    general rule in § 1432(a)(1) did not apply to him because
    only one of his parents had naturalized before his eighteenth
    birthday. Nor did any of the three exceptions apply to him.
    He therefore remained a non-citizen.
    Over the years following his eighteenth birthday, Mayea
    was convicted of several crimes. In 2003, the Government
    revoked his lawful permanent resident status and deported
    him. He illegally reentered the United States and was
    deported nine more times before reentering in 2008. In
    2010, Mayea was apprehended by immigration officers and
    eventually pleaded guilty in 2015 to illegal reentry in
    violation of 
    8 U.S.C. § 1326
    , which criminalizes reentry by
    “any alien who . . . has been denied admission, excluded,
    deported, or removed” pursuant to a removal order. After
    his release from custody, he was placed on supervised
    release and deported again, but soon returned to the United
    States. In 2017, immigration agents again detained Mayea
    and charged him with illegal reentry for the second time.
    The case proceeded to trial in the U.S. District Court for the
    Southern District of California.
    A jury found Mayea guilty. Mayea moved for judgment
    of acquittal, arguing that § 1432 was unconstitutional as
    UNITED STATES V. MAYEA-PULIDO                   7
    applied to him. He argued that under § 1432(a), he would
    have derived citizenship through his father alone had his
    parents been legally separated, but that he did not because
    they remained married. Mayea contended that this disparity
    showed that the statute discriminated on the basis of parental
    marital status in violation of the constitutional guarantee of
    equal protection. He urged the court to remedy this
    purported constitutional defect by allowing him to
    retroactively derive citizenship solely from his father’s
    naturalization. As a citizen, he would not be an “alien” who
    could be convicted of illegal reentry.
    The district court rejected Mayea’s argument and denied
    acquittal, sentencing him to 65 months in prison and three
    years of supervised release. Because this new conviction for
    illegal reentry violated the terms of Mayea’s supervised
    release for his 2015 conviction, the district court also
    revoked that supervised release term and added eight months
    of imprisonment to his new sentence. Mayea timely
    appealed. On appeal, he continues to press his argument that
    § 1432(a) denies equal protection.
    II.
    We review de novo both a district court’s denial of a
    motion for judgment of acquittal and its determinations
    regarding the constitutionality of a statute. United States v.
    Jinian, 
    725 F.3d 954
    , 959 (9th Cir. 2013); United States v.
    Zakharov, 
    468 F.3d 1171
    , 1176 (9th Cir. 2006).
    To determine the standard of review applicable to an
    equal protection challenge to a statutory classification, we
    8              UNITED STATES V. MAYEA-PULIDO
    ask whether the classification implicates a protected class. 2
    Dent v. Sessions, 
    900 F.3d 1075
    , 1081 (9th Cir. 2018), cert.
    denied, 
    139 S. Ct. 1472
     (2019). If it does, we apply some
    form of heightened scrutiny, requiring the government to
    satisfy a more exacting burden for the classification to pass
    constitutional muster. Clark v. Jeter, 
    486 U.S. 456
    , 461
    (1988). If it does not, and if there is no other reason to apply
    heightened scrutiny, 3 we must uphold the classification “if
    there is any reasonably conceivable state of facts that could
    provide a rational basis” for it. FCC v. Beach Commc’ns,
    Inc., 
    508 U.S. 307
    , 313 (1993).
    III.
    Mayea’s equal protection challenge focuses on the
    difference between § 1432(a)(1), which allows the child of
    parents who are not legally separated to derive citizenship
    only upon the naturalization of both parents, and the first
    2
    Section 1432 involves action by the federal government, so it is
    subject to the Fifth Amendment’s prohibition against “discrimination
    that is so unjustifiable as to be violative of due process.” Sessions v.
    Morales-Santana, 
    137 S. Ct. 1678
    , 1686 n.1 (2017) (quoting Weinberger
    v. Wiesenfeld, 
    420 U.S. 636
    , 638 n.2 (1975)). Our approach to evaluating
    a Fifth Amendment claim alleging such a due process violation is
    “precisely the same as to equal protection claims under the Fourteenth
    Amendment.” 
    Id.
     (quoting Weinberger, 
    420 U.S. at
    638 n.2).
    3
    Mayea has not argued that § 1432(a) impinges on fundamental
    rights or is motivated by animus, which may be other bases for applying
    more exacting scrutiny. See Short v. Brown, 
    893 F.3d 671
    , 679 (9th Cir.
    2018) (explaining that heightened scrutiny applies when “a state . . .
    burden[s] a fundamental right for some citizens but not for others”);
    Mountain Water Co. v. Mont. Dep’t of Pub. Serv. Regulation, 
    919 F.2d 593
    , 598 (9th Cir. 1990) (recognizing that a form of “heightened
    scrutiny” may be applicable when “Congress’s only purpose in enacting
    [a law] was to harm . . . ‘a politically unpopular group.’” (quoting U.S.
    Dep’t of Agric. v. Moreno, 
    413 U.S. 528
    , 534 (1973))).
    UNITED STATES V. MAYEA-PULIDO                       9
    clause of § 1432(a)(3), which allows the child of legally
    separated parents to derive citizenship upon the
    naturalization of one parent if that parent has sole legal
    custody. 4
    4
    The full text of the version of § 1432(a) applicable to Mayea
    provides:
    (a) A child born outside of the United States of alien
    parents, or of an alien parent and a citizen parent who
    has subsequently lost citizenship of the United States,
    becomes a citizen of the United States upon fulfillment
    of the following conditions:
    (1) The naturalization of both parents; or
    (2) The naturalization of the surviving parent if
    one of the parents is deceased; or
    (3) The naturalization of the parent having legal
    custody of the child when there has been a
    legal separation of the parents or the
    naturalization of the mother if the child was
    born out of wedlock and the paternity of the
    child has not been established by
    legitimation; and if
    (4) Such naturalization takes place while such
    child is under the age of eighteen years; and
    (5) Such child is residing in the United States
    pursuant to a lawful admission for permanent
    residence at the time of the naturalization of
    the parent last naturalized under clause (1) of
    this subsection, or the parent naturalized
    under clause (2) or (3) of this subsection, or
    thereafter begins to reside permanently in the
    10             UNITED STATES V. MAYEA-PULIDO
    In Mayea’s telling, this statutory scheme impermissibly
    discriminates on the basis of parental marital status by
    allowing the children of legally separated parents to become
    U.S. citizens more easily than the children of non-separated
    parents. For the reasons that follow, Mayea’s argument fails.
    A.
    We rejected a similar equal protection challenge to
    § 1432(a) in Barthelemy v. Ashcroft, 
    329 F.3d 1062
     (9th Cir.
    2003). Barthelemy, the petitioner in that case, was like
    Mayea the child of a couple that was not legally separated
    (although Barthelemy’s parents could not have legally
    separated because they never married in the first place). 
    Id.
    at 1063–65. Barthelemy’s father had naturalized before
    Barthelemy turned eighteen; his mother had not. 
    Id.
    at 1064–65. We held that Barthelemy did not derive
    citizenship through § 1432(a)(3) “because his natural
    parents never married and thus could not [have] legally
    separate[d].” Id. at 1065.
    Barthelemy argued that § 1432(a) “unconstitutionally
    discriminates on the basis of his parents’ former marital
    status.” Id. We evaluated his equal protection challenge
    under the rational basis standard because we interpreted
    Fiallo v. Bell, 
    430 U.S. 787
     (1977), as precluding application
    of any more exacting scrutiny. We understood Fiallo to
    instruct that “Congress has nearly plenary power to establish
    the qualifications for citizenship.” Barthelemy, 
    329 F.3d at 1065
    .
    United States while under the age of eighteen
    years.
    
    8 U.S.C. § 1432
    (a).
    UNITED STATES V. MAYEA-PULIDO                  11
    Applying rational basis review, we held that the statutory
    scheme in § 1432(a) had the legitimate objective of
    “protect[ing] . . . parental rights.” Id. at 1066. Congress
    generally required both parents to naturalize, we reasoned,
    because “[i]f United States citizenship were conferred to a
    child where one parent naturalized, but the other parent
    remained an alien, the alien’s parental rights could be
    effectively extinguished.” Id. Consistent with that rationale,
    Congress exempted from the two-parent-naturalization
    requirement those children whose non-citizen parent had
    fewer or no rights to protect: children with a deceased parent,
    a separated parent without legal custody, or an unknown
    father. See id.
    B.
    As a prior decision of our court, Barthelemy is binding
    unless it is “clearly irreconcilable with the reasoning or
    theory of intervening higher authority.” Miller v. Gammie,
    
    335 F.3d 889
    , 893 (9th Cir. 2003) (en banc). Mayea argues
    that the Supreme Court’s decision in Sessions v. Morales-
    Santana, 
    137 S. Ct. 1678
     (2017), is intervening higher
    authority that “effectively overruled” Barthelemy. See
    Miller, 
    335 F.3d at 893
    .
    In Morales-Santana, the Supreme Court held that the
    statutory scheme at 
    8 U.S.C. §§ 1401
    (g) and 1409, which
    imposed different requirements on unwed mothers and
    unwed fathers for conferring citizenship upon the birth of a
    child abroad, denied equal protection. 
    137 S. Ct. at
    1700–
    01. Under that scheme, when a child was born abroad to
    unmarried parents, only one of whom was a U.S. citizen, the
    U.S.-citizen parent could transmit citizenship to the child at
    birth by being physically present in the United States for a
    specified period prior to the child’s birth. 
    Id. at 1686
    . For
    an unmarried U.S.-citizen father, five years of physical
    12             UNITED STATES V. MAYEA-PULIDO
    presence was required. 
    Id.
     But for an unmarried U.S.-
    citizen mother, one year sufficed. 
    Id.
     By comparison, for
    married couples in which only one of the spouses was a U.S.
    citizen, the physical-presence requirement for the citizen
    parent was five years regardless of gender. 
    Id.
     5
    Morales-Santana subjected this statutory scheme to
    heightened scrutiny because it “differentiate[d] on the basis
    of gender” between unmarried mothers and unmarried
    fathers. 
    Id.
     at 1689–90 (explaining that “heightened scrutiny
    . . . attends ‘all gender-based classifications’” (quoting J.E.B.
    v. Alabama ex rel. T.B., 
    511 U.S. 127
    , 136 (1994))). In
    explaining this approach, the Court clarified that Fiallo did
    not mandate the application of rational basis review for all
    equal protection challenges to immigration statutes. Rather,
    Fiallo “disclaimed . . . the application of an exacting
    standard of review” for statutes that involved Congress’s
    power to admit non-citizens, but not for statutes governing
    claims of citizenship. 
    Id.
     at 1693–94.
    The Court then held that the physical-presence
    requirements in 
    8 U.S.C. §§ 1401
    (g) and 1409 failed to
    withstand heightened scrutiny. As the legislative history
    revealed, those requirements were the product of two beliefs:
    the “[f]ear[] that a foreign-born child could turn out more
    alien than American in character,” and the assumption that
    the “unwed mother is the natural and sole guardian of a
    nonmarital child.” 
    Id.
     at 1691–92 (quotation marks
    omitted). Congress reasoned that “there was no need for a
    5
    For married couples in which both spouses were citizens, it was
    enough for either parent to “ha[ve] had a residence in the United States
    or one of its outlying possessions, prior to the birth of [the child].”
    Morales-Santana, 
    137 S. Ct. at
    1695 n.18 (second alteration in original)
    (quoting 
    8 U.S.C. § 1401
    (c)).
    UNITED STATES V. MAYEA-PULIDO                 13
    prolonged residency prophylactic” for unwed citizen
    mothers, because “[t]he alien father, who might transmit
    foreign ways, was presumptively out of the picture.” 
    Id. at 1692
    . By contrast, a lengthy residency requirement was
    necessary for unwed citizen fathers to have the chance to
    “counteract the influence” of the presumably devoted non-
    citizen mother. 
    Id.
     The Court concluded that the
    “stunningly anachronistic” gender stereotypes animating the
    statutory scheme served no important governmental interest.
    
    Id.
     at 1692–93.
    Finally, the Court determined that the proper remedy was
    to subject both unwed mothers and unwed fathers to the
    more stringent five-year physical-presence rule. 
    Id.
     at 1698–
    1701. The Court pointed out that the alternative—extending
    the more favorable one-year rule to unwed mothers and
    fathers alike—would have the “irrational” effect of making
    it easier for the children of unmarried parents, only one of
    whom was a citizen, to receive citizenship, compared to the
    children of similarly situated married parents, to whom the
    five-year rule applied. 
    Id. at 1700
    . Remarking that Congress
    could not have intended to favor “nonmarital children” over
    “marital children” in this way, the Court observed in a
    footnote: “Distinctions based on parents’ marital status, we
    have said, are subject to the same heightened scrutiny as
    distinctions based on gender.” 
    Id.
     at 1700 & n.25.
    Mayea’s argument from Morales-Santana proceeds in
    two steps. First, he argues that Morales-Santana dispensed
    with the categorical rule of deference to immigration-related
    statutes we applied in Barthelemy. Second, he contends that
    footnote 25 of Morales-Santana requires us to apply
    heightened scrutiny to the parental marital status
    classification in § 1432(a).
    14          UNITED STATES V. MAYEA-PULIDO
    Mayea is right about the first step. We agree that
    Barthelemy’s reason for applying rational basis review is
    irreconcilable with the reasoning in Morales-Santana. But
    because he is wrong about the second step, his attempt to do
    away with Barthelemy’s holding fails. We conclude that
    rational basis review applies to § 1432(a) for reasons
    separate and apart from those relied on in Barthelemy. And
    Barthelemy’s holding that § 1432(a) is rational is not
    irreconcilable with Morales-Santana, so we remain bound
    by that portion of Barthelemy’s reasoning and thus by its
    ultimate holding that § 1432(a) is constitutional.
    1.
    Like the statutes examined in Morales-Santana,
    § 1432(a) governs the acquisition of citizenship, not the
    admission or exclusion of non-citizens. We therefore agree
    with Mayea that Barthelemy’s justification for applying
    rational basis review—that immigration statutes must
    always be given deference and thus reviewed only for
    rationality—is “clearly irreconcilable” with Morales-
    Santana’s clarification of the scope of deference to Congress
    on immigration issues, which prior cases such as Fiallo had
    described. See Miller, 
    335 F.3d at 893
    . We have already
    held as much in Dent v. Sessions, 
    900 F.3d 1075
     (9th Cir.
    2018), where we recognized that “Morales-Santana dictates
    that . . . equal protection claims do not necessarily receive
    rational basis review simply because they are in the
    immigration context.” 900 F.3d at 1081.
    Morales-Santana thus left open the possibility that a
    court may apply heightened scrutiny to a citizenship
    provision if there is otherwise a basis to do so. As we
    explained in Dent, when faced with a citizenship statute we
    simply proceed “as we would in a non-immigration equal
    UNITED STATES V. MAYEA-PULIDO                   15
    protection claim”: by determining whether the statute
    classifies on a basis that triggers heightened scrutiny. Id.
    2.
    We highlight at the outset that, contrary to Mayea’s
    characterization, § 1432(a) does not discriminate on the
    basis of parental marital status in and of itself. The statute’s
    general rule requires the naturalization of both parents to
    transmit citizenship to their child. 
    8 U.S.C. § 1432
    (a)(1). To
    trigger the exception in § 1432(a)(3) that allows a child to
    derive citizenship upon the naturalization of one parent, the
    statute requires both “a legal separation of the parents” and
    that the naturalizing parent have sole “legal custody of the
    child.” See Wedderburn v. INS, 
    215 F.3d 795
    , 800 (7th Cir.
    2000) (observing that § 1432(a)(3) “requires proof of both
    ‘legal custody’ and ‘legal separation’”). For the reasons that
    follow, we conclude that neither requirement imposes a
    suspect classification that triggers heightened scrutiny.
    3.
    The parties have failed to identify any decision from our
    court or the Supreme Court evaluating what level of scrutiny
    applies to classifications of children based on their parents’
    marital status at a time after their birth or on a parent’s
    custody status over them, and we are aware of none.
    Therefore, to determine in the first instance the
    appropriate level of scrutiny to apply to § 1432(a), we begin
    by asking whether the statute implicates a class of people
    who have “experienced a history of purposeful unequal
    treatment or been subjected to unique disabilities on the
    basis of stereotyped characteristics not truly indicative of
    their abilities.” Mass. Bd. of Ret. v. Murgia, 
    427 U.S. 307
    ,
    313 (1976) (quotation marks omitted); see Hibbs v. Dep’t of
    16             UNITED STATES V. MAYEA-PULIDO
    Human Res., 
    273 F.3d 844
    , 856 (9th Cir. 2001) (explaining
    that the “application of heightened scrutiny to . . . gender
    discrimination is justified largely on the basis” that such
    discrimination reflects “a history of purposeful unequal
    treatment,” and that “[g]ender differences are so seldom
    relevant to the achievement of any legitimate state interest
    that laws grounded in such considerations are deemed to
    reflect prejudice and antipathy” (citation and quotation
    marks omitted)), aff’d, 
    538 U.S. 721
     (2003).
    We are unaware of any evidence that classifications
    based on whether parents are legally separated after their
    child’s birth or whether one parent has sole legal custody
    over their child reflect historical purposeful discrimination
    or legal disadvantage, and Mayea has pointed to none. Nor
    do the other considerations in our usual test for determining
    whether heightened scrutiny applies suggest that such
    scrutiny is warranted here. See Karnoski v. Trump, 
    926 F.3d 1180
    , 1200 & n.17 (9th Cir. 2019) (citation omitted)
    (discussing the four-part test: “A) whether the class has been
    historically subjected to discrimination; B) whether the class
    has a defining characteristic that frequently bears a relation
    to ability to perform or contribute to society; C) whether the
    class exhibits obvious, immutable or distinguishing
    characteristics that define them as a discrete group; and D)
    whether the class is a minority or politically powerless”). 6
    6
    We recognize that there has been discrimination against subgroups
    within or otherwise related to the classifications in § 1432(a). For
    example, children with unmarried same-sex parents have faced
    discrimination in some contexts, but that has more to do with
    discrimination on the basis of sexual orientation than on the basis of the
    classifications at issue here. See Benjamin G. Ledsham, Means to
    Legitimate Ends: Same-Sex Marriage Through the Lens of Illegitimacy-
    Based Discrimination, 
    28 Cardozo L. Rev. 2373
    , 2375 (2007)
    (“[D]iscrimination against children of same-sex couples because of their
    UNITED STATES V. MAYEA-PULIDO                         17
    We therefore conclude that rational basis review applies to
    Mayea’s challenge to § 1432(a).
    This conclusion is consistent with the Seventh Circuit’s
    statement in Wedderburn that “the conjunction [in
    § 1432(a)(3)] of ‘legal separation’ with ‘legal custody’ does
    not concern any suspect class,” and therefore that “a rational
    basis is enough to defeat a constitutional challenge” to the
    statute. See 
    215 F.3d at 800
    . Similarly, the Second Circuit
    has held that Ҥ 1432(a) does not discriminate on the basis
    of a protected class.” Pierre v. Holder, 
    738 F.3d 39
    , 51 (2d
    Cir. 2013).
    4.
    Mayea’s arguments against application of rational basis
    review are unavailing. First, he argues that the Supreme
    Court has applied heightened scrutiny to legal distinctions
    based on parental marital status. But the cases Mayea cites
    for that proposition all involved discrimination based on a
    child’s “legitimacy”—whether the child’s parents were
    married at the time of the child’s birth. See Child, Black’s
    Law Dictionary (11th ed. 2019) (defining “legitimate child”
    as “a child conceived or born in lawful wedlock”). 7 It is
    well-established that legitimacy classifications are subject to
    intermediate scrutiny due to the historical discrimination
    faced by “illegitimate” children. See Clark v. Jeter, 486 U.S.
    parentage persists.”). And, of course, there have been “illegitimacy”
    based classifications motivated by historical discrimination against
    children whose parents were not married at the time of their birth, which
    we discuss below.
    7
    The terms “marital child” and “nonmarital child” are increasingly
    being used in lieu of “legitimate child” and “illegitimate child.” See
    Nonmarital Child, Black’s Law Dictionary (11th ed. 2019).
    18           UNITED STATES V. MAYEA-PULIDO
    456, 461 (1988) (holding that “classifications that burden
    illegitimate children for the sake of punishing the illicit
    relations of their parents” must be “substantially related to
    an important governmental objective”); Weber v. Aetna Cas.
    & Sur. Co., 
    406 U.S. 164
    , 175 (1972) (“The status of
    illegitimacy has expressed through the ages society’s
    condemnation of irresponsible liaisons beyond the bonds of
    marriage. But visiting this condemnation on the head of an
    infant is illogical and unjust.”).
    But § 1432(a) does not contain a legitimacy
    classification. The first clause of § 1432(a)(3) looks to
    parental marital status at the time either parent naturalizes,
    rather than at the time of the child’s birth. A nonmarital child
    would automatically derive citizenship under § 1432(a)(3) if
    his parents later married and then legally separated, the same
    as a marital child whose parents were married at his birth but
    later separated. See Levy v. U.S. Attorney Gen., 
    882 F.3d 1364
    , 1367–68 (11th Cir.) (“The clause does not require that
    a child be born into wedlock: a child born out of wedlock
    whose parents later marry and legally separate qualifies
    under § 1432(a)(3).”), cert. denied, 
    138 S. Ct. 1168
     (2018);
    Pierre, 738 F.3d at 51 (“[T]he distinction drawn in
    § 1432(a)(3) did not reflect discrimination based on
    legitimacy.”). Because the first clause of § 1432(a) does not
    classify individuals based on legitimacy, the line of cases on
    which Mayea relies is inapposite.
    Mayea next seizes on a footnote in Morales-Santana to
    argue that all parental marital status classifications warrant
    intermediate scrutiny. That footnote states: “Distinctions
    based on parents’ marital status, we have said, are subject to
    the same heightened scrutiny as distinctions based on
    gender.” Morales-Santana, 
    137 S. Ct. at
    1700 n.25. Read
    in context, it is clear that the footnote, too, refers to the
    UNITED STATES V. MAYEA-PULIDO                    19
    Supreme Court’s precedent holding that legitimacy, rather
    than parental marital status more generally, is a suspect
    classification that triggers more exacting review. To begin
    with, the footnote cites Jeter, in which the Court held that
    “classifications that burden illegitimate children for the sake
    of punishing the illicit relations of their parents” are subject
    to intermediate scrutiny. 
    486 U.S. at 461
    . Jeter did not
    extend heightened scrutiny to all classifications based on
    parental marital status.
    Moreover, the Morales-Santana footnote concerns a
    hypothetical legitimacy classification. As explained above,
    the footnote was part of a section in Morales-Santana
    discussing how to rectify the unconstitutionality of a
    statutory scheme that required an unmarried U.S.-citizen
    father with a child born abroad to be physically present in
    the United States for five years prior to the child’s birth in
    order for the father to transmit his citizenship to the child,
    whereas an unmarried mother could do the same after only
    one year of physical presence. 
    137 S. Ct. at 1686
    , 1698–
    1701. The Court declined to extend the one-year rule to
    unwed fathers because that rule would have made it easier
    for parents who were unmarried at the time of their child’s
    birth to transmit their citizenship than for parents who were
    married at the time of their child’s birth to do so. 
    Id. at 1700
    ;
    see also 
    id. at 1686
     (noting that the latter group of parents
    was subject to the five-year rule). It was this hypothetical
    that prompted the Court to observe that “[d]isadvantageous
    treatment of marital children in comparison to nonmarital
    children is scarcely a purpose one can sensibly attribute to
    Congress,” and to append the footnote underscoring that
    such differential treatment—turning on legitimacy—would
    have to withstand heightened scrutiny. 
    Id.
     at 1700 & n.25;
    see United States v. Muckleshoot Indian Tribe, 
    235 F.3d 429
    ,
    433 (9th Cir. 2000) (instructing that when interpreting
    20           UNITED STATES V. MAYEA-PULIDO
    judicial opinions, “the language of the court must be read in
    the light of the facts before it” (quotation marks omitted)).
    The Court’s use of the phrase “we have said” in the
    footnote reinforces the conclusion that it was referring to
    legitimacy-based classifications.        
    Id.
     at 1700 n.25
    (“Distinctions based on parents’ marital status, we have said,
    are subject to the same heightened scrutiny as distinctions
    based on gender.” (emphasis added)). In Mayea’s own
    words, by the time Morales-Santana was decided, “the
    Supreme Court ha[d] long held that distinctions based on
    legitimacy” are subject to intermediate scrutiny. See, e.g.,
    Jeter, 
    486 U.S. at 461
    ; Pickett v. Brown, 
    462 U.S. 1
    , 8
    (1983); Mills v. Habluetzel, 
    456 U.S. 91
    , 98–101 (1982);
    United States v. Clark, 
    445 U.S. 23
    , 26–27 (1980); Lalli v.
    Lalli, 
    439 U.S. 259
    , 265 (1978) (plurality opinion); Trimble
    v. Gordon, 
    430 U.S. 762
    , 767 (1977); Weber, 
    406 U.S. at
    175–76. By contrast, to our knowledge the Court has never
    applied heightened scrutiny to classifications based on
    parental marital status outside the legitimacy context. 8 We
    therefore understand the footnote as invoking the well-
    established line of precedent, culminating in Jeter, applying
    heightened scrutiny to legitimacy classifications. Indeed, it
    would have been strange for the Court in Morales-Santana
    to claim that it “ha[d] said” all classifications based on
    parents’ marital status are subject to heightened scrutiny
    when in fact it had never done so. See 
    137 S. Ct. at
    1700
    n.25.
    In sum, Mayea’s attempts to resist application of rational
    basis review are unavailing.
    8
    Indeed, Mayea concedes that “parents’ marital status and
    illegitimacy are not always the same thing.”
    UNITED STATES V. MAYEA-PULIDO                         21
    5.
    Reviewing § 1432(a) for a rational basis, we remain
    bound by our holding in Barthelemy that the statute survives
    that deferential standard. As we explained in Barthelemy,
    the distinctions drawn by that statutory provision are
    rationally related to the legitimate government interest in
    protecting the parental rights of the non-citizen parent.
    
    329 F.3d at 1066
    . 9 By permitting a naturalizing parent to
    unilaterally transmit citizenship to a child only when that
    parent is legally separated from the other parent and has sole
    legal custody over the child, § 1432(a) ensures that the non-
    citizen parent’s possible “desire that [their child] not become
    a United States citizen is honored.” Id. at 1066–67; see also
    Levy, 882 F.3d at 1368; Pierre, 738 F.3d at 51. The
    alternative—allowing a naturalizing parent to transmit
    citizenship without regard to the wishes of a non-citizen
    parent who has equal interests with respect to their child—
    could result in the “naturalizing parent . . . usurping the
    parental rights of the [non-citizen] parent.” Barthelemy,
    
    329 F.3d at 1066
    .
    Even if we were not bound by Barthelemy, we would
    conclude that § 1432(a) is rational. Although Mayea argues
    that § 1432(a) fails rational basis review because Morales-
    9
    Although it appears that the Barthelemy petitioner’s circumstances
    may have implicated only the marital status classification in § 1432(a)
    and not also the custody classification, our discussion of the statute’s
    rational approach to protecting parental rights touched on both. See
    Barthelemy, 
    329 F.3d at
    1066 & n.4. And to the extent Barthelemy
    should be read as only reaching a holding about the marital status
    classification, we reach the same conclusion as to the custody
    classification. Protecting the parental rights of parents with custody
    rights is a legitimate legislative purpose, and § 1432(a)’s treatment of
    custody status furthers that purpose.
    22             UNITED STATES V. MAYEA-PULIDO
    Santana explained that discriminating against married
    parents is “scarcely a purpose one can sensibly attribute to
    Congress,” 
    137 S. Ct. at 1700
    , discriminating against
    married parents is not the purpose behind § 1432(a).
    Protecting the parental rights of the non-citizen parent is.
    See Barthelemy, 
    329 F.3d at
    1066–67. That is plainly a
    legitimate legislative purpose.     See United States v.
    Casasola, 
    670 F.3d 1023
    , 1028–29 (9th Cir. 2012) (citing
    cases from other circuits also holding that protecting the
    parental rights of a non-citizen parent is a legitimate
    legislative purpose). Mayea does not contest this principle.
    Nor does he dispute that § 1432(a) furthers the purpose of
    protecting parental rights. Accordingly, we conclude that
    § 1432(a) does not deny equal protection. 10
    IV.
    For the foregoing reasons, we AFFIRM.
    10
    Mayea makes an additional argument that, by invalidating the
    citizenship statute at 
    8 U.S.C. § 1409
    (c), Morales-Santana invalidated
    the entire definition of “alienage” in the Immigration and Nationality
    Act. And because alienage is an element of the illegal reentry statute at
    
    8 U.S.C. § 1326
    , Mayea insists that statute is itself unconstitutional. But
    Mayea offers no explanation as to why § 1326 cannot be “fully
    operative” after § 1409(c), a wholly distinct provision, has been
    invalidated and thus severed from the remainder of the immigration
    statutes. See INS v. Chadha, 
    462 U.S. 919
    , 932–34 (1983) (explaining
    that pursuant to the Immigration and Nationality Act’s severability
    clause, an unconstitutional provision is severed and the rest of the
    statutory scheme survives “if what remains after severance is fully
    operative as a law” (citation and quotation marks omitted)). Section
    1326 remains intact after Morales-Santana.