The North American Free Trade Agreement (NAFTA) created special economic and trade relationships for the United States, Canada and Mexico. The TN nonimmigrant classification permits qualified Canadian and Mexican citizens to seek temporary entry into the United States to engage in business activities at a professional level. Among the types of professionals who are eligible to seek admission as TN nonimmigrants are accountants, engineers, lawyers, pharmacists, scientists, and teachers.
You may be eligible for TN nonimmigrant status, if:
You are a citizen of Canada or Mexico;
Your profession qualifies under the regulations;
The position in the United States requires a NAFTA professional;
You have a prearranged full-time or part-time job with a U.S. employer (but not self-employment); and
You have the qualifications to practice in the profession in question.
PERIOD OF STAY
The initial period of stay under a TN visa is up to 3 years. If you wish to remain in the United States beyond your initial period of stay without first departing from the United States, you must seek an extension of stay. If you are in the United States, your employer may file Form I-129 on your behalf. Alternatively, you may depart from the United States before the date your status expires, and then, once abroad, you may apply at a CBP-designated U.S. port of entry or at a designated pre-clearance/pre-flight inspection station using the same application and documentation procedures required at the time of your initial application for admission as a TN nonimmigrant.