IN THIS GUIDE · Describe the professional assignment across employer and customer
Start with the TN eligibility and application overview
Identify the duties at the point of delivery
Hypothetical example: an employer assigns a professional to help a customer implement a technical system. Explain what the applicant will actually do, the deliverables and the expected temporary period. A customer-facing label does not determine which profession, if any, fits the work.
Establish qualifications without relying on the provider’s reputation
Review the specific TN listing and permitted credentials. Canadian permanent residence alone does not establish Canadian or Mexican citizenship. A company’s professional accreditation, customer list or general assurance should not replace the applicant’s own qualification evidence.
Explain the real contractual chain
Identify the employer, recipient of services, supervision and relevant ownership. Services to a U.S. entity solely owned or controlled by the applicant are outside the permitted arrangement; foreign ownership alone is not a blanket disqualification. Calling an entity a client or provider does not decide the self-employment question.
Review the actual activity before starting
Record the work location and duties expected before and during the assignment. A provider agreement or customer onboarding process does not authorize U.S. employment. Confirm the applicable process and permission before performing the activity.
Apply the temporary-work and credential boundaries
TN concerns qualifying temporary professional activity for Canadian or Mexican citizens. Providing services to a U.S. entity solely owned or controlled by the applicant falls outside the permitted arrangement; a foreign business interest alone is not a blanket disqualification. Degrees from institutions outside Canada, Mexico and the United States require a reliable foreign-credential evaluation. Any licence needed to practise the profession in the United States is a separate question from the listed TN qualification.
Get the offer letter to match the entry
The listed occupation's degree, licence, or stated experience alternative does not change based on a rural address. A Canadian citizen may present the letter, degree and proof of citizenship at a U.S. port of entry, or the dealer may file Form I-129 with USCIS. Start by locating the most recent approval notice or admission stamp, the underlying job offer or duty letter it was based on, and any changes since then, title, duties, employer structure, salary. Where licensure is still in progress, an advance petition allows the position and its timing to be described fully in writing, and it avoids arriving at a border with a story about a licence that has not yet been granted. The parties can consider whether a different listed profession fits the work as it actually is, remembering that each has its own requirements and that the credential must match the profession claimed rather than the general field. A professional licence can be required by the place of practice even when the degree itself supports the USMCA qualification. The listed engineer alternatives and any separate authority to practise need their own accurate assessment. A Canadian citizen commonly requests TN classification during inspection for the assignment, while the U.S. employer can seek approval of an I-129 petition from USCIS first; a Mexican citizen generally needs the appropriate visa before requesting admission.
Sources reviewed 2026-09-07. This guide covers a preparation focus; it is not an individual eligibility assessment.