18 U.S.C. § 911. Citizen of the United States

Whoever falsely and willfully represents himself to be a citizen of the United States shall be fined under this title or imprisoned not more than three years, or both.
(June 25, 1948, ch. 645, 62 Stat. 742; Pub. L. 103–322, title XXXIII, § 330016(1)(H), Sept. 13, 1994, 108 Stat. 2147.)