Start with the TN eligibility and application overview
Ask who the employer actually is
The question is not who found the job but which entity will employ the surveyor once he crosses. Paying a Canadian corporation on invoice keeps him outside an employment relationship and points toward self-employment, which TN does not allow. If the firm can put him on its own payroll the problem disappears. If it cannot, ask why, because the answer usually reveals a staffing agency or a client-of-a-client arrangement that will have to be explained anyway. Obtain the proposed payroll entity's full legal name and the name of the person who will supervise the work. A contract that merely calls the relationship independent does not settle the immigration question. The practical record is the offer, payroll arrangement, reporting line, and the party able to end the assignment.
Ask which listed profession the firm has in mind
The relevant entry is Land Surveyor, and it carries its own credential rule: a state or provincial licence, or a baccalaureate or licenciatura degree. A provincial licence is squarely within that wording, so this applicant is unusually well placed. Ask the firm to confirm in writing that the role is professional surveying rather than crew supervision or drafting, because a title such as survey coordinator invites a question the transcript cannot answer. Read the duties against the selected profession line by line. Field measurements, boundary analysis, and preparation of survey work support the match; general project coordination may not. The immediate determination is whether to narrow the job description now or choose a different role before the letter is signed.
Ask what the support letter will say
Request a draft before travel. It should name the employer, state that the work is prearranged, describe the duties in enough detail for an officer to match them to the profession, give the intended period and the arrangements for payment. Ask the firm to avoid language suggesting an indefinite position, and ask it to say plainly whether the surveyor holds any ownership stake in the entity, since an undisclosed interest is worse than a disclosed one. Ask the employer to identify one person who can confirm the letter's statements if questioned. Attach the agreement or offer that matches the letter's pay and dates. A support letter often fails when its description is more ambitious than the employer's own records or the actual first assignment.
Ask how and where admission will be sought
A Canadian citizen ordinarily presents the letter and credentials at a Class A port of entry or a preclearance facility and is admitted in TN status without a visa stamp; alternatively the employer may file a petition with USCIS. Ask the firm which it prefers and who pays. Also ask whether the state requires its own surveying licence to sign plans, because immigration status and professional licensing are decided by different bodies and neither substitutes for the other. For a Canadian applicant, TN classification can be requested from an inspecting officer at a land crossing or a preclearance location. The employer can instead submit an I-129 petition to USCIS. Whichever route is chosen, the work must remain employment for the U.S. business, not an applicant-run engagement.
Sources reviewed 2026-09-07. This guide covers a preparation focus; it is not an individual eligibility assessment.