TN (Trade NAFTA) status is a special non-immigrant status which allows Canadian and Mexican citizens the opportunity to work in the United States in certain professional occupations. Up until October 16, 2008 TN work visas were granted to Canadians and Mexicans in one-year increments. The new rule allows an individual to obtain a TN work visa for up to three years. TN status may be renewed indefinitely in three-year increments.

It remains to be seen if Canada will amend its NAFTA rules and follow the U.S. lead on providing three year work permits under this category. As of December 2008, Americans or Mexicans seeking NAFTA Professional/TN work visas to work in Canada are still limited to obtaining one year work permits.

USCIS Update on New Rule  

Detailed Final Rule Regarding TN Work Visa Duration