FROM: http://www.travel.state.gov/travel/cbpmc/cbpmc_2223.html
| ALL persons, including U.S. citizens,
traveling by air between the
United States and Canada, Mexico,
Central and South America, the
Caribbean, and Bermuda are required
to present a valid passport, Air NEXUS
card, or U.S. Coast Guard Merchant
Mariner Document. | |
| ALL persons, including U.S. citizens, traveling between the U.S. and Canada, Mexico, Central and South America, the Caribbean, and Bermuda by land or sea (including ferries), are required to present a valid passport or other documents as determined by the Department of Homeland Security. |

