North American Free Trade Agreement (NAFTA)

Provides for the admission of Mexican and Canadian citizens who are coming to engage in professional activities.

Visitors for Business. Canadian and Mexican citizens may enter the U.S. as business visitors as long as they receive no salary from a U.S. source.

L Petitions. Canadians can present the petition at a Class A Port of Entry or preflight station and spouses and children may apply as L-2. Mexicans must submit an I-129 petition.

Professionals Status for Canadian and Mexican citizens engaged in professional activities. Must prove non-immigrant intent. Spouses and minor children of TN are admitted in TD status. They cannot accept employment but may study fulltime.