If you are filing for a national
from Mexico for initial classification as a TN (Trade NAFTA),
file your application with the Nebraska
Service Center.
If you are filing for a national
from Canada, and applying for initial classification as a TN
(Trade NAFTA), you will not need to complete Form I-129. See
8 CFR 214.6
for information on applying at a U.S. port of entry.
If you are applying for a national
from Mexico or Canada, who is already in the U.S., and applying
for a change of status to TN, or extension of stay as a TN, file
at the Nebraska
Service Center.