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CFR > Title 22 - Foreign Relations > CHAPTER I—DEPARTMENT OF STATE > SUBCHAPTER F—NATIONALITY AND PASSPORTS (parts 50 to 53) > PART 51—PASSPORTS > SUBPART C—Evidence of U.S. Citizenship or Nationality (§51.40 to §51.46) > 51.41—Documentary evidence.
51.41—Documentary evidence.
The applicant must provide documentary evidence that he or she is a U.S. citizen or non-citizen national.