Do you need a passport to fly to Mexico?
A passport is needed to fly to Mexico, Canada, Central and South
America, the Caribbean and Bermuda (as of Jan. 23, 2007).
Homeland Security issued a temporary ruling in June 2007 that allowed air travelers to fly as long as they carried proof that their passports were pending, but that allowance expired Sept. 30, 2007.
Land and Sea Travel:
Jan. 28, 2008: U.S. and Canadian citizens will need to present either 1) a WHTI-compliant document (e.g. a passport), OR 2) a government-issued photo ID (such as a driver's license), AND proof of citizenship (such as a birth certificate).
At some date in the summer of 2008, land and sea travel will require having either a U.S. passport; a U.S. passport card; a trusted traveler card such as NEXUS, FAST, or SENTRI; a valid Merchant Mariner Document (MMD) when traveling in conjunction with official maritime business; or a valid U.S. Military identification card when traveling on official orders.
For more information, call the National Passport Information Center at 1-877-487-2778, or go to www.travel.state.gov.