To cross the Canadian border, an individual needs the proper documents and to undergo an interview, according to TripAdvisor. While an individual with a criminal record can enter Canada, he may have a difficult time doing so and might have to undergo a secondary inspection.
Proper documents needed for entering Canada include a passport, passport card, NEXUS card, enhanced driver's license, birth certificate, Certificate of U.S. Naturalization and consular report of birth abroad, notes TripAdvisor. The specific documents an individual needs are determined by mode of travel, such as air, land, sea, U.S.-based cruise and traveling with children. Travelers from countries other than the United States may need a Temporary Resident Visa.
During the interview, the border officer usually asks where the individual lives, his country of origin, the purpose of his visit, the length of his stay, if he has any criminal convictions, and if he's traveling with any firearms, tobacco or alcohol, states TripAdvisor. A traveler should keep his answers short, remove his sunglasses, ensure he has quick access to all necessary documents and maintain eye contact with the border officer. If the border officer has any reason to suspect the traveler or his answers, the officer may ask the traveler to undergo a vehicle search at the main customs building, which can be time consuming.