Documentary Requirements for Canadian and Mexican Residents
In general, a nonimmigrant visitor must have a valid nonimmigrant visa and a passport that is valid for a minimum of 6-months beyond the initial period of stay in the United States. Even though certain individuals may be exempt the visa and passport requirement, the burden of proof is on the applicant to establish eligibility to enter the United States.
"Burden of proof" is discussed in the Immigration and Nationality Act section 291. Under current heightened security measures in effect at all ports-of-entry, including those at land border crossing points, each person wishing to enter the United States is responsible for having sufficient documentation to establish identity and citizenship.
NOTE: CBP heightened security now requires that each person may have to present identification that has a photograph attached.
Entry of Citizens of Canada
Citizens of Canada are exempt from the visa and passport requirement of Immigration and Nationality Act (section 212(a)(7).) To enter the United States, a Canadian citizen must be able to establish both identity and citizenship. Documents that may establish citizenship are:
Birth certificate
Citizenship certificate
Passport.
Although a CBP officer may accept an oral declaration of citizenship, it is recommended that a Canadian citizen carry a document that establishes citizenship. Under current procedures, all travelers may be required to present photo-identification.
NOTE: A Canadian citizen arriving from outside the Western Hemisphere is required to present a passport. Canadian citizens classified as Treaty Trader, Treaty Investor, or Fiancé(e) require a visa.