If an assignment changes because field access, testing or customer approval is delayed, describe what the applicant will actually do during the interval. A later professional deliverable does not automatically explain the earlier work. Keep the offer and supporting account current. A first review should produce a phase-by-phase duty chart, the current employer letter, and the credential evidence that corresponds to the profession claimed. The immediate decision is whether the interim tasks remain part of the qualifying professional proposal or require a changed plan. Record the answer before a traveler relies on a title or start date.
Record the interim tasks
Hypothetical example: geological analysis is postponed while the applicant is expected to perform general site support. Identify the work, responsibility and expected duration rather than continuing to describe only the original analytical role. Ask the employer to explain the actual plan and preserve the earlier scope for context. Hypothetical example: a Canadian actuary is asked to reconcile claims data while the promised pricing-model project waits for approval. The file should separate actuarial analysis from clerical data entry and state who will perform each. The applicant must decide whether the interim assignment can honestly be presented within the claimed professional role.
Assess the complete professional proposal
TN requires qualifying Canadian or Mexican citizenship, prearranged activities in a listed profession, the applicable qualification and temporary entry. The geologist entry lists a baccalaureate or licenciatura degree. A degree alone does not settle whether the revised duties fit the profession, and an employer’s project deadline does not establish authorization. A Canadian applicant may request TN classification at a U.S. inspection point, while an employer may pursue the classification through a Form I-129 filing. The route does not permit a professional to operate a controlled U.S. business as self-directed work. Choose the process after confirming the employer, duties, ownership and timing, then keep the supporting letter consistent with that choice.
Keep evidence tasks tied to the actual records
Provide the current duties, employer, receiving entity and intended period, including relevant ownership facts. Foreign degrees from institutions outside Canada, Mexico and the United States require reliable evaluations; foreign-language USCIS submissions require complete certified English translations. Those tasks should preserve the record, not erase an inconvenient interim phase. U.S. self-employment is not allowed in TN. Canadians may request TN status at a port of entry or use an employer-filed Form I-129 and generally need no visa stamp; a TD dependant can study but cannot work. The record that settles a disputed duty is usually the signed offer, statement of work, project plan or supervision record, not a later generalized explanation. Build a short index connecting each requirement to the actual document. If facts change after the package is prepared, update the account instead of carrying forward a document that has become inaccurate.
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.