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Required Documents for Entry into the United States

U.S. Citizens

U.S. citizens are exempt from passport requirements. However, it is highly recommended that a U.S. citizen be prepared to present documents such as valid or expired U.S. passport, U.S. birth certificate or naturalization certificate to avoid delays.

Note: The Western Hemisphere Travel Initiative will soon require all travelers to and from the Americas to have a passport or other accepted form of documentation to enter or reenter the United States. The program will be rolled out in phases. By December 31, 2007 it is anticipated that this requirement will be extended to all land border crossings.

Permanent Residents

U.S. Lawful Permanent Residents (LPRs) must provide one of the following documents:

• I-551, Permanent Resident Card (Green card),
• Machine-Readable Immigrant Visa endorsed with a CBP Admission Stamp,
• Temporary Residence Stamp (ADIT stamp) contained in a passport or on Form I-94,
• Valid Reentry Permit, or
• Unexpired Immigrant Visa. Passport required unless otherwise noted.

Visitors/Non-immigrants

Visitors/Non-immigrants must one of the following documents:

• Generally, a valid, unexpired passport and visa. However, certain classes may require specific supporting documentation such as an employment petition, student authorization, or approval notice.
• Nationals of countries authorized to participate in the Visa Waiver program are required to present an unexpired machine-readable passport.
• Nationals of countries authorized to participate in the Guam Visa Waiver Program are required to present an unexpired passport.
• Mexican nationals may provide a valid DSP-150 (BCC) in lieu of a valid passport and visa.
• Generally, Canadian nationals must show ID but are exempt from passport and visa requirements. However presentation of a Canadian passport, birth certificate, Naturalization certificate or other supporting documentation will facilitate the inspection and is strongly encouraged.