All international air travel requires a U.S. passport book for re-entry into the United States. Both commercial and private planes and other aircraft must follow these guidelines.
If you travel to Canada or Mexico by car, you must have a U.S. passport book or passport card for re-entry in to the United States. These rules also apply to any type of land travel such as train, bus or walking.
All sea travel, except to U.S. territories or "closed loop" cruises, require a U.S. passport book or passport card. A closed loop cruise is one that leaves from a U.S. port, travels only within the Western Hemisphere, and returns to the same port. You will need a government-issued photo ID and a copy of your birth certificate for re-entry. If you will be entering a foreign country during your cruise, check the entry regulations before our trip.
You may travel to and from U.S. territories and the U.S. with only a valid photo ID. Special groups may be allowed re-entry into the United States without a U.S. passport. These include children's school and religious groups, military members and Native Americans. Those groups have their own requirements for re-entry instead of the U.S. passport.
