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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 28, 2025
All Titles
Title 22
Chapter I
Part 51
Subpart 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.
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