
Introduction: Your Professional Bridge to the U.S.
Are you a skilled professional from Canada or Mexico looking to work temporarily in the United States? The TN visa, established under the United States-Mexico-Canada Agreement (USMCA, formerly NAFTA), offers a unique pathway for qualified citizens of these countries to engage in professional business activities within the U.S.
Unlike some other work visas, the TN classification is specifically tailored for certain professions listed in the agreement, ranging from accountants and engineers to scientists and teachers. However, understanding the eligibility criteria, application process (which differs for Canadians and Mexicans), and key requirements is crucial for a successful outcome.
1. Eligibility Essentials: Citizenship and Profession
The foundation of TN eligibility rests on two main pillars: your citizenship and your profession.
- Citizenship: You must be a citizen of either Canada or Mexico. Permanent residents of Canada or Mexico do not qualify for TN status.
- Qualifying Profession: Your intended job in the U.S. must fall under the specific list of professions outlined in the USMCA agreement (Appendix 2 of Annex 16-A). You can find details on qualifying professions and their minimum education/experience requirements in official government resources like the Department of State’s Foreign Affairs Manual (FAM). It’s important that your U.S. job duties align with the listed profession.
- Qualifications: You must possess the necessary credentials (degrees, licenses, or experience) specified for your profession in the USMCA list.
- Prearranged Job: You need a prearranged full-time or part-time job offer from a U.S. employer. Self-employment is generally not permitted under TN status.
Meeting these core requirements is the first step towards TN visa eligibility.

2. Application Process: Key Differences for Canadians vs. Mexicans
How you apply for TN status differs significantly depending on your citizenship:
- Canadian Citizens: Generally, Canadians are visa-exempt and do not need to apply for a TN visa at a U.S. consulate. They can typically apply for TN status directly at a U.S. port of entry (POE) or designated pre-clearance/pre-flight inspection station. They must present required documentation to a U.S. Customs and Border Protection (CBP) officer, including proof of Canadian citizenship, a letter from the U.S. employer detailing the job offer and professional duties, and proof of qualifications. Alternatively, the U.S. employer can file Form I-129 with USCIS on behalf of the Canadian citizen. More details can be found on the USCIS TN NAFTA Professionals page.
- Mexican Citizens: Unlike Canadians, Mexican citizens must obtain a TN visa stamp from a U.S. embassy or consulate before seeking entry to the United States in TN status. This involves completing the online nonimmigrant visa application (Form DS-160), paying the visa fee, and attending a visa interview, bringing supporting documents like the employer letter and proof of qualifications. Once the visa is issued, they can apply for admission at a U.S. port of entry. Information for Mexican citizens is also available on the CBP website.
Understanding the correct application path based on your citizenship is crucial to avoid delays.
3. Documentation is Key: The Employer Letter and Proof of Qualifications
Regardless of whether you apply at a POE (Canadians) or a consulate (Mexicans), certain documents are vital:
- Proof of Citizenship: Valid passport (required for Mexicans to get a visa; Canadians need proof of citizenship, often a passport).
- Employer Letter: A comprehensive letter from your prospective U.S. employer is essential. It should detail:
- The professional capacity in which you will work in the U.S. (matching a USMCA profession).
- The specific job duties.
- The anticipated length of stay (temporary intent).
- Your educational qualifications or appropriate credentials demonstrating professional status.
- Arrangements for your payment/remuneration.
- Proof of Qualifications: Evidence that you meet the minimum education and/or experience requirements for the specific profession listed under USMCA (e.g., diplomas, degrees, licenses, transcripts, experience letters).
- Temporary Intent: You must demonstrate that your entry is temporary, without the intent to establish permanent residence.
Having complete and accurate documentation ready is critical for a smooth application.

4. Duration of Stay and Extensions
TN status is granted for a temporary period, typically up to three years at a time.
- Initial Period: The initial period of admission is usually granted for up to three years, as determined by the CBP officer (for Canadians applying at the border) or based on the visa validity and request (for Mexicans).
- Extensions: If you need to continue working for the same employer beyond the initial period, extensions of stay can be requested. This is typically done by the U.S. employer filing Form I-129 with USCIS before your current status expires. Extensions can also be granted in increments of up to three years.
- No Limit (in theory): While each stay is temporary, there is currently no regulatory limit on the total number of years a person can remain in TN status through extensions, provided they continue to meet the requirements and maintain temporary intent. However, frequent or lengthy stays might invite closer scrutiny regarding temporary intent.
Understanding the duration and extension process is important for planning. For other temporary work options, explore our guide on H Visas Unpacked: 5 Key Insights for U.S. Temporary Work.
5. Dependents (TD Status) and Maintaining Status
Your spouse and unmarried minor children (under 21) may be eligible to accompany you to the U.S. in TD (Trade Dependent) status.
- Eligibility: They must prove their relationship to you (the principal TN visa holder).
- Citizenship: Dependents do not need to be citizens of Canada or Mexico.
- Application: Canadian dependents apply for TD status at the POE. Mexican dependents (and dependents of other nationalities) must apply for TD visas at a U.S. consulate.
- Restrictions: TD dependents can study in the U.S. but are not permitted to work.
- Maintaining Status: As the TN professional, you must maintain your status by working only for the approved employer in the specified professional capacity. Any significant changes in employment may require a new TN application or petition.
Navigating the TN visa process requires careful attention to detail. Ensuring you meet the professional requirements and provide comprehensive documentation is key. Feeling unsure about your eligibility or the application process? Book a consultation with D’Alessio Law Group today and receive a $100 discount by mentioning this article.

Don’t let complexities hinder your professional opportunity in the U.S. Expert legal advice can clarify the path forward. Secure your $100 discounted consultation now to discuss your TN visa case with our experienced team.