Government/Customs

Foreign embassies in the U.S.

U.S. embassies around the world.

Entry/exit document (e.g., visas) and health (e.g., vaccinations) requirements
U.S. State Department

Gets pre-approved, low-risk passengers in and out of U.S. Customs faster
U.S. Customs Trusted Traveler Programs

Apply or replace your U.S. Passport
U.S. State Department

General Visa FAQs
U.S. State Department

General health resource for internal travel including vaccinations
U.S. Centers for Disease Control and Prevention

Tips for traveling abroad (packed with links and information)
U.S. State Department