U.S. travelers entering Canada must show both proof of identity and citizenship, requiring a U.S. passport or passport card.
Prior to June 1, 2009, other forms of identification were accepted to cross the American and Canadian border; after that date, U.S. Passports or passport cards became the requirement.
For expedited travel across the border, the NEXUS trusted traveler program grants a card to use for quick entry into Canada or the United States. The program requires an application and a fee; eligibility depends on the results of a background check.
Americans with a criminal record must apply for a special permit to enter Canada. This also includes convictions for misdemeanor crimes and DWI (driving while intoxicated ) charges.
Those planning to stay in Canada for more than 180 days must apply for a Visa, according to the U.S. State Department. Travelers planning to work or attend a university in Canada must apply through the Canadian Embassy.
