IN THIS GUIDE · An engineering offer whose internal job title says something else entirely
Start with the TN eligibility and application overview
The listed profession is the starting point, not the employer's title
USMCA Appendix 2 lists the professions eligible for TN and states the minimum qualification for each. Engineer appears on that list with a baccalaureate degree or a provincial or state licence as the qualification. Product Owner does not appear on the list and never will, because the list is closed and cannot be expanded by an employer's naming conventions. What an officer assesses is whether the actual duties are the practice of a listed profession. So the offer letter has to describe engineering work in engineering language, and if the internal title is used at all it should be explained rather than left to speak for itself. Make a two-column comparison of each proposed duty and the listed profession. If a task is peripheral, say who performs it; do not let a payroll title decide the legal analysis.
Write the letter so the duties, not the adjectives, do the work
A support letter that says the applicant will lead cross-functional initiatives and drive product strategy describes a manager of unclear discipline. One that says she will perform thermal load and heat transfer calculations for trailer refrigeration systems, size compressors and evaporators, and sign off on validation test protocols describes an engineer. The letter should also state the temporary nature of the assignment, its expected duration, the salary and who the employer is. Vagueness is not neutral at a port of entry; it invites the officer to supply their own reading of a role nobody has clearly described. Have the signatory explain the reporting relationship and work location in ordinary language. A reviewer should be able to identify the professional activity without translating corporate vocabulary.
Qualification evidence and the two things people confuse
Marianne's baccalaureate in mechanical engineering satisfies the Engineer listing on its own. Two separate issues get tangled with it. A Canadian provincial engineering licence is one accepted route to qualification but is not required if the degree is there, and it is not the same as any state practice requirement that United States law may impose on the work itself. And Canadian permanent residence, however long held, does not satisfy TN eligibility, which requires Canadian or Mexican citizenship. If a degree came from an institution outside Canada, Mexico or the United States, a reliable credential evaluation is needed. Where education or licensing is uncertain, obtain the governing record before the support letter is finalized. A later explanation is weaker when the original letter omitted the qualification issue.
Self-employment, ownership and honest disclosure
TN does not authorize a person to work in the United States for a company they own or control; it contemplates prearranged employment for a United States employer, or contract work for one, on terms the employer sets out. Holding a minority interest in a Canadian company is not a disqualification by itself, but any ownership interest in the prospective United States employer should be disclosed and explained rather than discovered. If Marianne kept consulting clients in Quebec, the honest description is that she performs that work in Canada, and any intention to perform it while physically in the United States is a separate question that has to be asked. Record ownership, contracting authority, and who directs the work in one note. That sequence exposes a prohibited independent-business arrangement before money or travel is committed.
Sources reviewed 2026-09-07. This guide covers a preparation focus; it is not an individual eligibility assessment.