[Code of Federal Regulations] [Title 22, Volume 1] [Revised as of April 1, 2006] From the U.S. Government Printing Office via GPO Access [CITE: 22CFR51.54] [Page 247-248] TITLE 22--FOREIGN RELATIONS CHAPTER I--DEPARTMENT OF STATE PART 51_PASSPORTS--Table of Contents Subpart C_Evidence of U.S. Citizenship or Nationality Sec. 51.54 Requirement of additional evidence of U.S. citizenship. Nothing contained in Sec. Sec. 51.43 through 51.53 shall prohibit the Department from requiring an applicant to submit [[Page 248]] other evidence deemed necessary to establish his or her U.S. citizenship or nationality. (22 U.S.C. 2658 and 3926) [31 FR 13540, Oct. 20, 1966, as amended at 49 FR 16989, Apr. 23, 1984]