Read the general life across the border overview
Hypothetical example: a Bécancour family plans to follow a chemical engineer to a U.S. plant under TN. The spouse is a registered nurse who intends to work, and the son is 20. Three people, three questions: the engineer's TN depends on citizenship and profession; the nurse cannot work in TD and needs her own TN; the son loses TD at 21 and needs his own route. Planning them together prevents an arrival that authorizes one person and strands two.
The nurse needs a file that starts before the engineer's
TD status permits study but never employment, so a nurse who plans to practise must obtain her own TN on her own offer. Registered Nurse is listed with a state or provincial licence or a licenciatura degree as the credential. A U.S. employer may issue an offer contingent on completion of state licensing and any required health-care-worker certification. Those steps follow the state board's and certification provider's timelines, so start them early. She must be a Canadian or Mexican citizen; with only Canadian permanent residence she cannot use TN, and the family should ask whether the engineer's employer structure offers L-1 instead, since L-2 spouses are employment-authorized regardless of nationality.
The son's age is a deadline, not a detail
A child qualifies for TD only while unmarried and under 21. A 20-year-old who enters in TD will lose that status on his birthday and cannot simply stay. Plan his route now: admission to a U.S. college with F-1 status, which permits study and limited on-campus work; or, if he holds a listed profession's credential, his own TN on his own offer. Both need lead time for applications and documents. If the family instead uses an L-1 or E-2 route through the engineer's employer or investment, the same age limit applies to L-2 and E-2 children. Record his birth date against every planned filing and keep his study or work plan separate from his parents'.
Confirm citizenship, records and ages for everyone
Write a one-page table: each person's citizenship, Canadian immigration status, intended U.S. activity, the classification that fits it and the date any age or expiry limit falls. Collect birth and marriage certificates with certified translations, and note any prior U.S. refusal or overstay for anyone, since one person's history can affect the family's timing. Understand what each derivative status permits: TD allows study only; L-2 and E-2 spouses may work incident to status; children in any of these may not work. Immigrant routes such as EB-5 or Gold Card treat the spouse and unmarried children under 21 as derivatives with their own age calculations. A family that arrives with one authorized worker and two people who cannot work or stay has planned only one route.
What else is on your mind?
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?Can my spouse work if I hold TN status?Editorial source review: 2026-09-07. General preparation guidance, not an individual assessment.