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U.S. Citizenship and Immigration Services

The U.S. Citizenship and Immigration Services is responsible for processing immigration and naturalization applications and establishing policies regarding immigration services.

Toll-free number

  • 1-800-375-5283
  • 1-877-247-4645 (Military Help Line)

TTY

1-800-767-1833

Main address

Information and Customer Service Division
5900 Capital Gateway Dr.
Camp Springs, MD 20588-0009
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