Arizona - easiest place to return vehicle permit?

And if you have to renew your passport the tracking of the 10 year permit will be lost in Mexico's system. The 10 year permit is issued on your passport # and in USA (don't know in Canada) when you renew your passport it will have a new #. Therefore you can get another 10 year permit should you want to return to Mexico later in a different RV. Of course maybe someday this little loophole may close. I would go to briansue's location if possible. Nogales is a PITA to cross & return.

rocmoc n AZ/Mexico