WHTI - Travel Documentation
An update on the USA government’s Western Hemisphere Travel Initiative, which applies to all travelers between the USA and Canada, the Caribbean, Mexico and Bermuda:
The USA’s Western Hemisphere Travel Initiative currently requires passport documentation for all air travellers between the USA and Canada, Mexico, the Caribbean, and Bermuda.
For land and sea border crossings into the USA, as at January 31, 2008, if you don’t have a passport or another approved alternative (such as a US passport card, SENTRI, NEXUS, FAST, or US Coast Guard Mariner Document), you’ll need a driver’s licence or other government-issue photo identification plus proof of citizenship (eg: birth certificate, citizenship card).
At a later date, to be determined, passports will be required for border crossings by land and sea.
For more information about WHTI from the Canadian perspective, visit the government website.