TN VISAS WERE APPROVED BY THE NORTH AMERICAN FREE TRADE
AGREEMENT (NAFTA) Professionals of Canada or Mexico may obtain a 3 year TN Visa to work in the U.S. under the following conditions:
Applicant is a Citizen of Canada or Mexico;
Profession is on the NAFTA
Professions List;
Job Position in the U.S. requires a NAFTA professional;
Mexican or Canadian applicant is to work for a U.S. employer; and,
Canadian or Mexican citizen has the qualifications of the profession.
Spouses and children (unmarried children under the age of 21) who are live in the U.S. with the TN worker can get a TD visa. The TN worker's spouse and children do not have to be citizens of Mexico or Canada. Spouses and children cannot work while in the U.S., but are permitted to study.

Professional Accountant from Mexico
There is no limit to the number of times a Mexican or Canadian citizen can be granted TN visa status, provided their stay remains temporary nonimmigrant. A foreign national proves that their stay is temporary by keeping evidence of a lot of ties with their home country (filing Canadian or Mexican tax returns, voting, maintaining a residence and foreign bank account) and by not applying for an American green card (permanent residence). If a TN visa holder wishes to apply for foreign residence, they should transfer to H-1B visa status.
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TN VISA BORDER TIPS:
*This is a very subjective visa so be prepared for the border interview.
*Dress professionally, be respectful and do not lose your temper or get fed up (even if you are required to wait a long time at the border).
*It is up to the discretion of the Immigration Officer whether you qualify - do not give them reasons to deny you. You may not be allowed to use your cell phone.
*Bring proof of ties to either Mexico or Canada, as well as all other required documents.
*Bring cash to pay
for the TN Status.
Mexico City, Mexico, where NAFTA was signed by U.S., Mexico & Canada in 1993