IN THIS GUIDE · Decide which credential alternative the forester's file rests on
Start with the TN eligibility and application overview
Pick the alternative and build the file around it
Hypothetical example: a Mission forester holds a forestry degree from a Canadian university and current registration with the provincial regulator. Either fact can qualify on its own, so the file should present both, with the degree transcript and the registration certificate each in original form. If the degree were in an unrelated field, the licence alone would carry the case; if registration had lapsed, the degree would. Do not describe a technologist diploma as a degree, and do not describe an applied-for licence as a licence held. An officer reads the alternative you rely on and checks the document against it. A useful final check is to compare the letter with the supporting records one fact at a time: employer name, worksite, duties, dates, compensation and reporting line. A material mismatch may lead to further questioning even when each document sounds plausible alone. Resolve the mismatch in a revised employer letter before presenting the package, rather than trying to explain away an avoidable inconsistency orally.
Read the offer for professional-level duties
Harvest planning, silviculture prescriptions, cruise design and regulatory compliance are forester duties. Log scaling, crew supervision and equipment scheduling are closer to technician or supervisory work. The employer's letter should describe what the forester will actually do, the period requested (up to three years at a time), the salary and why the role requires a forester rather than a technician. A letter that lists a job title and nothing else invites questions at the counter that the applicant should not have to answer from memory.
Keep ownership and self-employment out of the arrangement
A forester who consults through her own Canadian company cannot use TN to serve a U.S. entity she owns or controls. Working for a Canadian consulting firm that has a contract with a U.S. client can qualify, provided the firm is the real employer and she holds no controlling stake in the client. Any ownership interest in the U.S. employer must be disclosed rather than left for an officer to discover; disclosure is the difference between an explainable minority stake and an apparent attempt to conceal self-employment.
Choose the channel and plan for dependants
Canadian citizens may apply at a port of entry or a preclearance location with proof of citizenship, the employer's letter and credential evidence, and receive a decision there; no visa stamp is involved. Alternatively, the employer may file Form I-129 with USCIS in advance. A spouse and unmarried children under 21 may accompany in TD status, which permits study but not employment. A spouse who intends to work needs a classification of their own.
Sources reviewed 2026-09-07. This guide covers a preparation focus; it is not an individual eligibility assessment.