The most important piece of an application for TN visa status is the employer's job offer / support letter. Regardless of the substance or contents of this letter, there are a few basic rules that should be followed to avoid U.S. immigration's rejection of this letter:
- Applicants should always present a letter with an original signature. Copies of signed letters are normally rejected. Signatures should be in blue ink as they are more easily identified as originals.
- The letter should be printed on the TN petitioner's company letterhead. Again, the letter should be printed in color to further assure the officer it is an original.
- The letter should be addressed to the applicable U.S. immigration authority, e.g. U.S. Customs and Border Protection (for border applications), the U.S. Embassy/Consulate (for DS-160 applications), or USCIS (for I-129 petitions).
- The letter should have a reference line or subject line indicating the applicable TN category.
- The individual who has signed the letter should be prepared to receive a call from a U.S. immigration officer who may call to confirm the position offered.