A delayed start may also change the job that was originally assessed. Compare the real current proposal with the earlier evidence before relying on a TN profession analysis or employer letter prepared for different work. Choose between updating the existing packet and rebuilding it only after identifying the actual changed fact. The decisive question is not whether a letter is polished; it is whether the current employer, professional role, credentials, duration, and arrangement are accurately documented. A Canadian citizen may seek admission at a designated inspection point or preclearance, or an employer may request classification through USCIS on Form I-129. Neither process converts an applicant-controlled U.S. enterprise into permitted TN self-employment.
Identify the change behind the new date
Hypothetical example: the employer postpones the start and moves the applicant to another project. List changes in duties, customer responsibilities, employer or duration. Do not assume the old support letter remains accurate because the title is unchanged, or that every delay necessarily creates the same issue. Hypothetical example: a corrosion-control engineer is moved from inspecting bridge components to coordinating a supplier’s deliveries. Before reusing the packet, the applicant must decide whether the actual duties still fit the identified professional classification. The answer comes from the current duty description, reporting arrangement, and credential rule, not from the unchanged job title.
Reassess the current professional fit
Identify the actual listed TN profession and its precise qualification requirements, including permitted alternatives. Eligible Canadian or Mexican citizenship remains required; Canadian permanent residence does not substitute for it. A prior proposal’s professional duties should not be borrowed to support materially different work in the revised assignment. Build a proof list beside the professional requirement: citizenship record, employer letter, detailed duties, intended duration, degree or permitted alternative, and any practice licence. Then compare it with the revised proposal. If the customer, worksite, supervisor, or compensation arrangement changes, obtain records that explain the full present relationship instead of relying on a letter written for another project.
Keep interim work and final evidence separate
Clarify employment and relevant ownership arrangements; foreign ownership alone is not a blanket disqualification, while TN is not general permission for U.S. self-employment. Have material changes and any intended interim U.S. activity reviewed. A new start date, signed offer or pending application does not authorize a different job while waiting. A Canadian citizen may request TN status at a port of entry, or an employer may file Form I-129; Canadian TN applicants generally do not need a visa stamp. A TD family member may study but has no employment authorization. Decide what the applicant will do before the final start date and document the answer separately from the final role. A support letter for temporary professional employment does not grant open-ended permission for unrelated tasks. The practical decision is whether the interim activity occurs in Canada, requires a different process, or should wait until the relevant permission is in place.
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.