TN is an acronym meaning “Trade NAFTA.” The TN visa permits Canadian and Mexican citizens the opportunity to work in the US within specific occupations for a temporary period, but may be renewed indefinitely. The advantage of TN over an H1B visa is that TN status may be obtained any time of the year. There is, however, a specific list of qualifying occupations listed in NAFTA Chapter 16, Annex 103, Appendix 1602.d.1. Occupations on this list include lawyers, research physicians, architects, dentists, graphic designers, college teachers, systems analysts, engineers, accountants, management consultants, social workers, and chemists. There are over 60 occupations listed.