TN at a Port of Entry vs a U.S. Consulate: Who Goes Where
By Kyle Farmer, Farmer Law PC, Austin, Texas.
Last reviewed: November 9, 2026.
Short answer: Canadians apply for TN directly with CBP at a U.S. port of entry, a U.S. airport that handles international traffic, or a preclearance station in Canada, with no visa. Mexicans must first get a TN visa at a U.S. embassy or consulate, then present it to CBP at the port. Both can be admitted for up to 3 years.
If you’re a Canadian or Mexican professional with a U.S. job offer, or a U.S. employer hiring one, book a free 15-minute intro call.
Why the path depends on your citizenship
TN status is open to citizens of Canada and Mexico in professions listed in the United States-Mexico-Canada Agreement (USMCA) (INA 214(e); 8 CFR 214.6; Appendix 2 to Annex 16-A of USMCA Chapter 16, called Appendix 1603.D.1 under NAFTA). The professional requirements are the same for both countries. What differs is where you prove them:
- Canadian citizens are generally exempt from U.S. visa requirements except in a few classifications, and TN is not one of them (8 CFR 212.1(a)(1)). So a Canadian applies for TN status at the point of entry (8 CFR 214.6(d)(2)).
- Mexican citizens need a valid passport and a valid TN visa to be admitted (8 CFR 214.6(d)(1)). The visa comes from a U.S. embassy or consulate, and CBP then decides admission at the port.
Permanent residents of Canada or Mexico who are not citizens do not qualify for TN (9 FAM 402.17).
Side-by-side comparison
| Canadian citizens | Mexican citizens | |
|---|---|---|
| Visa needed? | No, in the ordinary case | Yes, a TN visa |
| Where you apply | CBP at a U.S. Class A port of entry, a U.S. airport handling international traffic, or a U.S. preclearance or pre-flight station | U.S. embassy or consulate, then CBP at the port |
| Who decides eligibility | CBP officer | Consular officer for the visa; CBP officer for admission |
| Proof of citizenship | Proof of Canadian citizenship (a passport is the simplest) | Valid Mexican passport |
| Government fee | CBP fee paid on admission | Visa application fee, plus any reciprocity fee |
| Admission period | Up to 3 years per admission | Up to 3 years per admission |
Sources: 8 CFR 214.6(d)(1)-(3), (e); USCIS TN page; 9 FAM 402.17-6. This page does not list fee amounts; check CBP and the State Department for current figures.
The Canadian path: port of entry or preclearance
At the port or preclearance station, you present your documents to a CBP officer, who decides whether you qualify. Under 8 CFR 214.6(d)(3), bring:
- Proof of Canadian citizenship. A valid Canadian passport is the simplest proof, and CBP’s travel document rules generally call for one.
- The employer letter. It must fully cover the profession, a description of the professional activities, the anticipated length of stay, your educational qualifications or credentials and the arrangements for pay (8 CFR 214.6(d)(3)(ii)). See our TN visa example letter.
- Proof of credentials, such as diplomas, degrees or professional licenses, plus a credentials evaluation for any degree from outside the United States, Canada or Mexico.
Preclearance. If you fly from a Canadian airport with U.S. preclearance, the TN decision happens in Canada before you board. CBP has designated 14 locations for optimized processing of first-time Canadian TN and L-1 applicants, including 4 preclearance locations at the Calgary, Toronto Pearson, Montreal Trudeau and Vancouver airports. First-time applicants are not required to use a designated port; CBP says you may go to any port of entry along the Canadian border, though it encourages the designated ones.
Timing tip. Because the decision happens on the spot, plan a buffer before your start date, and carry complete originals. If CBP finds you eligible, you are admitted in TN status with an I-94 record.
Employer filing. Workers outside the U.S. don’t need a USCIS petition. An employer may choose to file Form I-129 for a Canadian outside the U.S. That route adds a USCIS step and is not required.
For more on Canadians, see TN visa for Canadian citizens.
The Mexican path: U.S. embassy or consulate first
Mexican citizens cannot get TN status at the border without a visa. The steps are:
- Complete Form DS-160 and schedule a visa interview at a U.S. embassy or consulate.
- Attend the interview with your passport, the employer letter and proof of credentials. The consular officer decides the visa (9 FAM 402.17-6).
- Once the visa is issued, present the valid passport and TN visa to CBP at a qualifying port of entry (8 CFR 214.6(d)(1)). CBP decides admission.
The visa’s validity follows the State Department reciprocity schedule for Mexico, which is separate from the up-to-3-year admission CBP grants (9 FAM 402.17-6; 8 CFR 214.6(e)). For the interview itself, see our TN visa Mexico consulate interview guide. For the overall Mexican path, see TN visa for Mexican citizens.
Can a Canadian go to a consulate instead?
Rarely, and only when it helps. 9 FAM 402.17-6 says a TN visa for a Canadian should be rare but can be issued on request. Its example is a Canadian living in a third country with a non-Canadian spouse or children, who need TD visas to travel with them.
Readmission, renewals and job changes
- Returning during a valid admission. You can be readmitted for the rest of your TN period with a valid I-94 if your job and employer have not changed (8 CFR 214.6(g)(1)). If you no longer have a valid I-94 but your current TN admission period has not ended, CBP can readmit you for the rest of that period: Canadians may show alternate evidence such as a TN fee receipt or a prior TN admission stamp in a passport, plus a confirming employer letter; Mexicans must show a valid, unexpired TN visa and evidence of a previous admission (8 CFR 214.6(g)(2)). Once that admission period has ended, you need a new TN admission supported by a new employer letter (8 CFR 214.6(d), (h)(2)).
- New admission. Canadians can return to a port or preclearance station with a new letter. Mexicans apply for a new TN visa at a consulate when the old one has expired.
- Inside the U.S. For a worker already in the U.S., the employer files Form I-129 to extend TN status, change employers, or change to TN from another status. See TN renewal and changing employers.
If CBP or a consulate refuses TN, see our page on TN denials and appeals.
Family members
Spouses and unmarried children under 21 can come in TD status (8 CFR 214.6(j)). Canadian family members can apply at the port with the principal. Mexican family members and other non-Canadian family members generally need TD visas from a U.S. embassy or consulate. TD family members can study but cannot work in TD status.
How Farmer Law PC helps
Our experienced attorneys prepare Canadian professionals for port of entry and preclearance applications and prepare Mexican professionals for the consulate, from the employer letter to the credential file. We also help U.S. employers plan start dates around each path.
FAQ
Do Canadians need a TN visa?
No, not in the ordinary case. Canadians apply for TN status directly with CBP at a U.S. port of entry, a U.S. airport handling international traffic, or a preclearance station.
Can Mexican citizens apply for TN at the border?
No. Mexican citizens need a TN visa from a U.S. embassy or consulate first. They then present the passport and TN visa to CBP at a port of entry.
Can Canadians apply for TN at an airport in Canada?
Yes, at a U.S. preclearance location. CBP lists Calgary, Toronto Pearson, Montreal Trudeau and Vancouver among its designated locations for first-time TN applicants.
Does a Canadian have to use a designated port of entry for a first TN?
No. CBP says first-time applicants may go to any port of entry along the Canadian border, though it encourages the designated ports for optimized processing.
Is the TN stay longer at a port of entry or with a consulate visa?
Neither. Both paths lead to an admission of up to 3 years per entry. For Mexicans, the visa’s own validity follows the reciprocity schedule and can differ from the stay.
Talk with us
If you’re a Canadian or Mexican professional planning a TN, or an employer hiring one, book a free 15-minute intro call with one of our attorneys, or call (512) 588-5909.
