Who can apply ? The category "Professionals Under the North American Free Trade Agreement" is available only to citizens of Mexico and Canada. Under the North American Free Trade Agreement (NAFTA) a citizen of a NAFTA country may work in a professional occupation in another NAFTA country provided that 1) the profession is on the NAFTA list, 2) the alien possesses the specific criteria for that profession, 3) the prospective position requires someone in that professional capacity and 4) the alien is going to work for a U.S. employer. The spouse and unmarried, minor children of the principal alien are entitled to the derivative status, but they are unable to accept employment in the United States. Aliens entering under this classification are considered non-immigrants.