IN THIS GUIDE · Test an engineering label against the work actually promised
Use an ordinary deliverable to test the title
Hypothetical example: an offer names an engineer but the expected outputs are shipment schedules and inventory reports. Ask the employer to distinguish actual engineering analysis from coordination. Do not rewrite the outputs to resemble a profession the parties prefer; the offered work must be described truthfully. Build a duty matrix from ordinary work products, not from marketing language. Put each recurring task beside the professional activity it requires, identify who assigns it, and retain a supervisor statement that can be checked against the contract and organization chart. This makes a genuine mixed role visible before travel planning begins.
Apply the credential rule that actually belongs to the profession
For the engineer listing, the stated qualification is a baccalaureate or licenciatura degree, or a state or provincial licence. Permission to practise a regulated profession in the United States is a separate question. Degrees from institutions outside Canada, Mexico and the United States require a reliable foreign-credential evaluation; this is not a universal requirement to buy a certificate package for every applicant. Credential review should end with a narrow conclusion: which listed qualification is met, by which primary record, and whether any professional licensing question remains outside immigration classification. An evaluation, transcript, licence record and job description serve different purposes. Combining them loosely can hide a missing qualification.
Test the recipient of the services
Identify the real employer, client and any intermediary. Providing services to an entity the applicant solely owns or controls falls outside the permitted TN arrangement. A Canadian business interest is not automatically disqualifying, but the actual ownership and employment facts must be reviewed rather than hidden behind incorporation. Where an applicant holds interests in several businesses, prepare an ownership-and-control map before choosing the service recipient. The relevant question is operational control of the U.S. engagement, not simply whether an entity has a familiar name. A candid map can prevent a structure that resembles prohibited independent work.
Keep evidence and permission distinct
Canadian permanent residence does not satisfy TN citizenship eligibility. A signed offer and genuine degree may support a case without authorizing a start. Review the actual chosen procedure and any material change in duties or employer before acting on a planned work date. Choose the process only after the evidence is stable. A Canadian citizen may seek TN classification through inspection or use a USCIS petition route; a Mexican citizen ordinarily needs visa processing. Neither route changes the need for temporary, employer-directed work in the listed profession, and neither cures a material duty change.
Sources reviewed 2026-09-07. This guide covers a preparation focus; it is not an individual eligibility assessment.