if your state does not issue a front license plate, make a color copy and get a clear plastic plate cover and mount on the front of your car/truck. this will help eliminate getting stopped at the check points.

you can get an fm3 in the usa at your local mexican cou. office. its a 2 time visit but will take 1st visit to get information on all documents you need ..... then you turn in documents and get a return date to pick up your fm3.