There is no USCIS Standard Application form for the TN Visa. It is a set of documents explaining to the Immigration Officer how you and the job qualify for the TN Visa. The TN Visa application includes the Employer Letter. It is crucial that the Employer Letter be written correctly and includes all of the information the Immigration Officer is looking for.
answered 22 May '12, 17:05
For TN Renewals you can use Form I-129 if renewing by mail.
answered 30 Jan '14, 13:02