Identification Requirements:
The Western Hemisphere Travel Initiative (WHTI) is a U.S. law that requires all travellers to present a valid passport when travelling to, through or from the U.S. by air.  When entering via land or water, you can use either a passport or other proof of U.S. citizenship (such as an original or certified birth certificate) along with photo identification until May 31st, 2009 after which a passport will be required.

U.S. citizens do not require a visa for stays up to 180 days. If you are a naturalized U.S. citizen, you should carry this certificate. Permanent residents of the U.S. must bring their Green Card. U.S. citizens do not require a visa for stays up to 180 days.

As well, those admissible to Canada must not have a criminal record. This includes convictions of driving while intoxicated.

Please visit www.consular.canada.usembassy.gov/enter_canada.asp for more information.