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Cambridge TN guide: explain why the offer and project letter differ

USAvisa field guide · 2 minute readReviewed 7 September 2026

Read the general professional work overview

THE SHORT ANSWER

Different documents can describe different aspects of an assignment. Clarify the actual employer and agreed professional work before assuming the most favorable wording supplies the full TN account.

01

Locate the real difference

Hypothetical example: an offer uses a legal entity name while a project letter uses a brand. Identify whether the records concern the same actual arrangement. Preserve genuine originals rather than changing historical documents to make them look identical.

02

Apply the listing to the agreed duties

TN principals require Canadian or Mexican citizenship and the prescribed credentials for a listed professional activity. Clarify conflicting duty descriptions before choosing a category. Experience does not universally replace a required degree.

03

Explain credentials and permission separately

Degrees from institutions outside Canada, Mexico and the United States require reliable credential evaluation; translation is distinct. Explain relevant ownership, including the prohibited arrangement involving services to a U.S. entity solely owned or controlled by the applicant, without treating foreign ownership alone as a blanket ban. Review changed work before relying on existing authorization.

SOURCE NOTES

Editorial source review: 2026-09-07. General preparation guidance, not an individual assessment.

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