TN stands for (Trade NAFTA) category.  The North American Free Trade Agreement facilitates the entry of Canadian and Mexican citizens to the United States to engage in professional business activities on a temporary basis. The TN allows for admission of individuals for the purpose of:

Canadians Citizens

• Working for a U.S. employer as a professional; or
• Working for a foreign employer (including even a non-Canadian employer) to provide pre-arranged professional services to a U.S. employer.

Mexican Citizens

• Working for a U.S. employer as a professional
• Unlike Canadian citizens, Mexican citizens cannot use the TN category to provide pre-arranged services in the U.S. for a foreign employer; they must be employed directly by a U.S. employer.

Canadians and Mexicans can be admitted for periods up to one year. Extensions of stay are also granted in one-year increments.  There is no cumulative total limit.  Status can be renewed each year indefinitely.

Canadians do not need to obtain a visa stamp from a U.S. Embassy or consulate in Canada.  They may apply for TN status at the point of entry into the U.S.  No prior pre-approved application is needed.