Provide an accurate description of the proposed professional work, duration and remuneration and the relevant supporting evidence. A brief commercial agreement may omit facts needed for the immigration assessment. Additional explanations should clarify the arrangement without contradicting its actual terms.
Connect deliverables with qualifications
Use concrete work products to explain the duties and compare them with the listed profession. Identify the credential relied on and any required evaluation or translation. A detailed contract cannot compensate for a missing qualification.
Build a short support letter or employer statement around the facts the commercial agreement leaves out: the US recipient, work location, temporary period, remuneration, supervision, and specific deliverables. Link each duty to the selected USMCA profession and attach the profession’s required degree, licence, or experience proof, including a reliable evaluation or translation when appropriate. TN requires Canadian or Mexican citizenship, prearranged professional work, and satisfaction of the chosen listing; it cannot support US self-employment. Canadians may present the coherent package at a port of entry or proceed through a US employer’s Form I-129. A common documentary failure is using broad consulting language that never shows why the credential and proposed tasks belong together.
Hypothetical example: A Sherbrooke industrial designer is retained to redesign housings for a US appliance producer under a two-page services contract. A supplementary letter may identify the prototypes, design reviews, reporting line, six-month assignment, and payment terms while remaining faithful to that contract. Her diploma and portfolio can support context, but the filing still needs to establish the applicable listed profession and its prescribed qualification rather than relying on attractive renderings alone.