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Regulations last checked for updates: Aug 14, 2026

Title 22 - Foreign Relations last revised: Dec 14, 2026
All TitlesTitle 22Chapter IPart 51Subpart C - Subpart C—Evidence of U.S. Citizenship or Nationality
  • § 51.40 - Burden of proof.
  • § 51.41 - Documentary evidence.
  • § 51.42 - Persons born in the United States applying for a passport for the first time.
  • § 51.43 - Persons born outside the United States applying for a passport for the first time.
  • § 51.44 - Proof of resumption or retention of U.S. citizenship.
  • § 51.45 - Department discretion to require evidence of U.S. citizenship or non-citizen nationality.
  • § 51.46 - Return or retention of evidence of U.S. citizenship or non-citizen nationality.
authority: 8 U.S.C. 1104; 8 U.S.C. 1185; 8 U.S.C. 1185n (text of Pub. L. 108-458, 118 Stat. 3638, 3823 (Dec. 17, 2004)); 8 U.S.C. 1504; 8 U.S.C. 1714; 22 U.S.C. 211a,212,212a,212b,213,213n (Pub. L. 106-113 Div. B, Sec. 1000(a)(7) [Div. A, Title II, Sec. 236], 113 Stat. 1536, 1501A-430); 214, 214a, 217a, 218, 2651a, 2671(d)(3), 2705, 2714, 2714a, 2721, and 3926; 26 U.S.C. 6039E; 26 CFR 301.6039E-1; 31 U.S.C. 9701; 34 U.S.C. 21501-21510; 42 U.S.C. 652(k) ; E.O. 11295, Aug. 5, 1966, 31 FR 10603, 3 CFR, 1966-1970 Comp., p. 570; Pub. L. 114-119, 130 Stat. 15
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