8 U.S.C. § 1481 : US Code - Section 1481: Loss of nationality by native-born or naturalized citizen; voluntary action; burden of proof; presumptions

Search 8 U.S.C. § 1481 : US Code - Section 1481: Loss of nationality by native-born or naturalized citizen; voluntary action; burden of proof; presumptions

      (a) A person who is a national of the United States whether by
    birth or naturalization, shall lose his nationality by voluntarily
    performing any of the following acts with the intention of
    relinquishing United States nationality - 
        (1) obtaining naturalization in a foreign state upon his own
      application or upon an application filed by a duly authorized
      agent, after having attained the age of eighteen years; or
        (2) taking an oath or making an affirmation or other formal
      declaration of allegiance to a foreign state or a political
      subdivision thereof, after having attained the age of eighteen
      years; or
        (3) entering, or serving in, the armed forces of a foreign
      state if (A) such armed forces are engaged in hostilities against
      the United States, or (B) such persons serve as a commissioned or
      non-commissioned officer; or
        (4)(A) accepting, serving in, or performing the duties of any
      office, post, or employment under the government of a foreign
      state or a political subdivision thereof, after attaining the age
      of eighteen years if he has or acquires the nationality of such
      foreign state; or (B) accepting, serving in, or performing the
      duties of any office, post, or employment under the government of
      a foreign state or a political subdivision thereof, after
      attaining the age of eighteen years for which office, post, or
      employment an oath, affirmation, or declaration of allegiance is
      required; or
        (5) making a formal renunciation of nationality before a
      diplomatic or consular officer of the United States in a foreign
      state, in such form as may be prescribed by the Secretary of
      State; or
        (6) making in the United States a formal written renunciation
      of nationality in such form as may be prescribed by, and before
      such officer as may be designated by, the Attorney General,
      whenever the United States shall be in a state of war and the
      Attorney General shall approve such renunciation as not contrary
      to the interests of national defense; or
        (7) committing any act of treason against, or attempting by
      force to overthrow, or bearing arms against, the United States,
      violating or conspiring to violate any of the provisions of
      section 2383 of title 18, or willfully performing any act in
      violation of section 2385 of title 18, or violating section 2384
      of title 18 by engaging in a conspiracy to overthrow, put down,
      or to destroy by force the Government of the United States, or to
      levy war against them, if and when he is convicted thereof by a
      court martial or by a court of competent jurisdiction.

      (b) Whenever the loss of United States nationality is put in
    issue in any action or proceeding commenced on or after September
    26, 1961 under, or by virtue of, the provisions of this chapter or
    any other Act, the burden shall be upon the person or party
    claiming that such loss occurred, to establish such claim by a
    preponderance of the evidence. Any person who commits or performs,
    or who has committed or performed, any act of expatriation under
    the provisions of this chapter or any other Act shall be presumed
    to have done so voluntarily, but such presumption may be rebutted
    upon a showing, by a preponderance of the evidence, that the act or
    acts committed or performed were not done voluntarily.