You have an engineering role that has been open for five months. A recruiter brings you a maintenance engineer in Querétaro with eight years in automotive Tier 1, fluent enough in English to run a shift meeting, ready to relocate. Then someone in the room says the word sponsorship, and the conversation stops.
That reaction is usually based on the H-1B, and it is the wrong reference point. The TN is a separate category with a separate process, and the employer's role in it is much smaller than most hiring managers expect.
What the TN Actually Is
The TN category exists under Chapter 16 of the USMCA, carried forward from NAFTA. It allows Mexican and Canadian citizens in a defined list of professions to work in the United States for a U.S. employer. Engineer is on that list, and has been since the category was created.
For a Mexican citizen, the application is made at a U.S. Consulate in Mexico. The engineer assembles a file, attends a consular interview, and receives the visa. You do not file a petition. There is no lottery to enter and no annual quota that can close before your candidate reaches it.
What You Sign, and What You Don't
The employer's paperwork obligation is two documents.
- A job offer letter stating the position, duties, salary, and duration
- A support letter confirming the offer and describing how the role requires an engineering degree
That is the whole of it. Compare that to what an H-1B asks for.
| Requirement | TN | H-1B |
|---|---|---|
| USCIS petition | Not required | Required |
| Labor Condition Application | Not required | Required, filed with DOL |
| Annual cap | None | Capped, lottery-allocated |
| Public access file | Not required | Required, maintained by employer |
| Prevailing wage determination | Not required | Required |
You still pay the engineer competitive market-rate compensation for the role and the region, and you still comply with every employment law that applies to any other hire. What you avoid is the administrative apparatus around the H-1B, not your obligations as an employer.
ITAR is a hard blocker. If your facility holds ITAR-controlled work or performs on defense contracts, a TN holder cannot fill the role, and no amount of documentation changes that. Commercial aerospace with no defense contracts is viable. Confirm this before you begin, not after your candidate has a consular appointment.
Which Degrees Qualify
The engineer must hold a degree in a recognized engineering discipline. Mechanical, industrial, electrical, mechatronic, chemical, metallurgical, and the related fields all qualify. Mexican degrees do not require translation.
One change matters a great deal and is recent enough that many employers have not heard it. As of 2025, computer science and software degrees no longer qualify automatically under the engineer category. If you are hiring for a controls or automation role and your candidate's degree is in computer science rather than an engineering discipline, that case needs review before anyone drafts an offer.
Where Employers Create Their Own Problems
Nearly every avoidable TN denial traces back to the offer letter. Adjudicators are checking whether the duties described require an engineering degree. When the title and the duties pull in different directions, the case gets refused.
These titles cause trouble consistently, and each needs to be reframed around its engineering substance before the letter goes out:
- Project Manager
- Operations Manager
- Technician, at any level
- Strategic Sourcing Project Manager
The fix is not to invent a title. It is to describe the role accurately in engineering terms, because in most cases the engineering work is genuinely there and the internal title simply obscured it. A maintenance manager who spends their week on reliability analysis, failure investigation, and equipment specification is doing engineering work. The letter has to say so, in the duties, in specific language.
Beyond the letter, applications are refused for reasons that sit with the candidate rather than with you: a degree that does not match the job, prior immigration violations, immediate family sponsorship for permanent residence that undercuts nonimmigrant intent, or criminal history. A competent screening process surfaces these before you extend an offer.
Timeline and Cost
Plan for approximately four months from signed offer to start date. The variable that moves that number is consular appointment availability, not the difficulty of the file. A clean, complete package does not get you an earlier appointment.
Attorney fees for preparing and reviewing the documentation package run approximately $2,600. Renewals are roughly half that. Whether the employer or the engineer carries that cost is a matter of negotiation and varies by company.
Status runs three years and renews indefinitely. There is no cap on renewals and no point at which the engineer ages out of the category. Employers who plan around a single three-year window are underestimating what they are building.
We source and screen the engineer, then review the offer letter and duties language against TN requirements before anything is submitted. Documentation packages go through Carla Caballero, our immigration attorney, who reviews every file. Your involvement is the interview, the decision, and two signatures.
If you have a role open and want to know whether it maps cleanly to the TN engineer category, send us the job description. That question is answerable in a single conversation.
This article is informational only. ACE & Bridgewell is not an immigration law firm and does not provide legal advice. TN visa requirements can change and individual circumstances vary. Always work with a qualified immigration attorney for guidance specific to your situation.
