Read the general eligibility basics overview
An applicant’s birth country may differ from the country that recognizes them as a citizen today. Record both accurately when asked. For TN and treaty-nationality analysis, a Canadian address or a birthplace is not a substitute for evidence of the citizenship actually held. Order the verification before the route. Citizenship is a fact to be evidenced, not inferred, and the document that settles it — a passport, a citizenship certificate, a naturalisation record — is obtained from an authority on its own schedule. Start that request first, because every later step depends on the answer. Nothing downstream can be corrected without it, and the wait is rarely short.
Correct the nationality assumption before choosing a route
Hypothetical example: a Canadian permanent resident became a Mexican citizen after being born elsewhere, but an employer assumes the birthplace on the résumé rules out TN. Provide the actual citizenship facts and supporting documents. TN includes qualifying Canadian and Mexican citizens; Canadian permanent residence alone is insufficient. Do not omit the birthplace or change it to make the records look simpler.
Identify which fact each question requests
List birth country, current citizenships, prior citizenship changes and Canadian status separately. An employer worksheet, visa form and professional eligibility review may ask different questions. Read the actual field and have uncertain history verified with the appropriate authority. Current nationality is relevant to treaty categories, but that does not make birth information irrelevant to every immigration procedure.
Prepare the procedure for the verified citizenship
Ask which petition, visa, admission or status process applies to the applicant’s actual situation rather than copying instructions sent to another person born in the same country. Mexican and Canadian TN procedures differ. The profession, accepted qualifications, prearranged professional employment and temporary entry still require review. Keep any Canadian residence-maintenance question separate from the U.S. category analysis.
What the employer settles once the citizenship is proved
Verified citizenship is the input to the employer’s work, not the end of the file. With the nationality established, the U.S. company decides which occupation on the USMCA appendix the role is being offered under, and states it in the support letter alongside the duties and the period. It then confirms the qualification the listed profession actually requires, which is not interchangeable across professions — a degree satisfies some entries, documented experience satisfies others, and only where the listed entry says so. Where the qualification rests on a degree awarded outside Canada, Mexico or the United States, a credential evaluation is obtained, and foreign-language records go to USCIS with certified English translations. Each of these takes time the applicant does not control. Begin them as soon as the citizenship is confirmed rather than at the point the start date is agreed, because the start date is the one thing in this sequence that can be moved.
What else is on your mind?
Does Canadian permanent residence give me access to TN?Is a matching job title enough for TN?Can years of experience replace a degree for TN?Can my own U.S. company employ me under TN?Editorial source review: 2026-09-07. General preparation guidance, not an individual assessment.