Once again, El Codo has been lurking on Lonely Planet’s excellent Thorn Tree Mexico Forum. He directed me to this informative discussion of the penalties for an expired FMM. Be sure to read through to the bottom. I especially enjoyed the following very sound advice from “michoacan”: “I have found that being polite, honest and forthright brings about a lot of pleasant surprises with Mexican authorities. It seems many officials are looking to see if a person is seemingly showing proper respect toward ‘La Republica.’ I found this with migracion, aduana, the SSP, PFP and military.” Yes.