Find out what documents you need to enter the United States:
The Western Hemisphere Travel Initiative (WHTI) is a U.S. law that requires all travellers, including U.S. and Canadian citizens, to present a valid passport or other approved secure document when entering the United States from within the western hemisphere.
When entering the United States by land or water, Canadian citizens are required to present one of the following valid documents: a passport, a NEXUS card, a Free and Secure Trade (FAST) card or an enhanced driver's licence/enhanced identification card or a Secure Certificate of Indian Status (when this certificate is available and approved by the United States).
Canadian citizens flying to the United States must present a valid passport to confirm their citizenship and identity. A NEXUS card is also acceptable when using a self-serve kiosk located in the pre-clearance area at designated Canadian airports.
The Government of Canada continues to recommend that Canadian citizens carry a valid Canadian passport for all visits abroad, including visits to the United States. A passport is the only universally-accepted identification document, and it proves that you have a right to return to Canada. To find out how to obtain a Canadian passport, visit Passport Canada's Web site (www.passportcanada.gc.ca).
Members of the NEXUS program are still required to carry appropriate documentation when travelling into Canada by air in addition to their NEXUS card.
Note: Canadian entry requirements have not changed as a result of the U.S. WHTI.