The TN Visa Explained: Everything Canadian and Mexican Professionals Need to Know in 2025

If you're a Canadian or Mexican professional dreaming of working in the United States, the TN visa may be your fastest, most straightforward path. Created under the United States–Mexico–Canada Agreement (USMCA) — formerly NAFTA — the TN visa is specifically designed for qualified professionals in a defined list of occupations.

But despite how streamlined the process sounds, there are plenty of details that trip people up. This guide breaks down everything you need to know: who qualifies, how to apply, what to bring, and how to avoid common mistakes.

What Is the TN Visa?

The TN (Trade NAFTA) nonimmigrant visa status allows citizens of Canada and Mexico to work in the United States in prearranged professional business activities. It is not a green card or a path to permanent residency on its own — it is a nonimmigrant status, meaning it is temporary and requires renewal.

Key facts at a glance:

• Available to: Canadian and Mexican citizens only
• Purpose: Professional employment in qualifying occupations
• Duration: Issued in 3-year increments, renewable indefinitely
• Dependents: Spouses and minor children may accompany as TD visa holders (no work authorization for dependents)
• Dual intent: Generally not permitted — TN holders should not have immigrant intent

Who Qualifies? The USMCA Occupation List

This is the most critical factor: your job must fall into one of the occupations explicitly listed under USMCA. The list covers a wide range of professional fields, including:

• Accountants
• Engineers (all disciplines)
• Computer Systems Analysts
• Scientists (agricultural, biological, chemical, geologist, meteorologist, etc.)
• Physicians and Nurses (with specific restrictions)
• Lawyers (limited to Mexican or U.S. law — Canadian lawyers may face restrictions)
• Economists, Psychologists, Social Workers
• Graphic Designers, Interior Designers
• Management Consultants
• Teachers and University Professors

This is not an exhaustive list. The full USMCA Appendix 1603.D.1 contains the complete schedule. Crucially, your job title alone does not determine eligibility — the actual duties of your role must align with the listed occupation.

Canadian Citizens vs. Mexican Citizens: A Key Difference

The application process differs significantly depending on your nationality.

Required Documents

Regardless of nationality, you'll need a strong documentation package. Here's what to prepare:

• Valid passport (at least 6 months validity beyond intended stay)
• Letter from your U.S. employer describing your role, duties, salary, and length of employment
• Evidence of your professional qualifications (degrees, transcripts, professional licenses, credentials evaluations)
• Proof of Canadian or Mexican citizenship
• For Mexican nationals: completed DS-160 form and visa fee payment receipt

The Application Process Step by Step

Duration, Extensions, and Renewals

TN status is granted in increments of up to 3 years. There is no statutory limit on the number of renewals, so TN holders can theoretically maintain status indefinitely as long as they continue to meet the requirements and maintain nonimmigrant intent.

To extend or renew TN status, you have two options:

• File Form I-129 (Petition for Nonimmigrant Worker) with USCIS while inside the U.S. — this allows you to remain in the U.S. while the petition is pending
• Leave the U.S. and re-apply at a port of entry (Canadian citizens) or consulate (Mexican citizens) for a fresh TN admission

Common Reasons for TN Denial

TN applications are not guaranteed. CBP officers and consular officers have discretion. The most common grounds for denial include:

• Occupation not on the USMCA list
• Job duties don't match the claimed occupation
• Insufficient evidence of qualifying credentials (e.g., no degree for a profession requiring one)
• Evidence of immigrant intent (e.g., a pending green card application or statements about wanting to settle permanently)
• Incomplete or vague employer support letter
• Prior immigration violations or inadmissibility grounds

TN Visa vs. H-1B: Which Is Right for You?

If you're a Canadian or Mexican professional, you may wonder whether to pursue a TN or an H-1B. Here's a quick comparison:

For most Canadians and Mexicans in qualifying occupations, the TN is the better starting point due to its speed and simplicity. If your long-term goal is a green card, however, you'll want to plan carefully since TN status requires maintaining nonimmigrant intent.

Can TN Holders Get a Green Card?

This is one of the most nuanced areas of TN status. Technically, TN is a nonimmigrant status and TN holders are not supposed to have "dual intent" — the simultaneous intent to remain in the U.S. temporarily while pursuing permanent residency.

In practice, USCIS and CBP have generally allowed TN holders to pursue employment-based green cards as long as the green card petition does not demonstrate a definitive present intent to remain permanently. However, this is a gray area and the risk of TN denial upon reentry increases if there is a pending adjustment of status or immigrant visa petition.

Practical Tips for a Smooth TN Experience

• Carry all original documents every time you cross the border — CBP can request to review them at any entry
• Keep copies of your I-94 admission record (accessible at i94.cbp.dhs.gov) and monitor your authorized stay
• Notify your employer promptly if your job duties change significantly — a material change may require a new TN application
• If denied at the border, you can typically re-apply immediately with better documentation or at a different port of entry
• Work with an immigration attorney for complex situations, credential evaluations, or occupations that don't fit neatly into the USMCA list