UPDATED 16 SEPTEMBER 2002
Crossing the International Border between Canada and the United States requires inspection by Immigration & Customs, which will include a vehicle inspection. You will need personal identification documents, which differ depending on your citizenship. American and Canadian citizens need proof of citizenship, such as: a certified birth certificate PLUS a photo id (such as a driver's license); or a passport. A child without a passport, or who is not included on a parent's passport, must have a birth certificate, and if not the child of the adults accompanying them, a letter from the parents (with telephone and address contact information) is required. Citizens of other countries may be required to have a passport and/or visa.