Passport card and GE card
I personally go with my passport card to get into Mexico cause they might give you a hard time if you don't have it. Basically will have to bribe them probably from what I here. The FMM is separate no? You have to have that regardless of entry, cause I had my passport card and they still demanded one. You can print out a free one that last 7 days or buy the 25-35 dollar one that 6 months. I use my GE to get into America because you literally cut the entire line. Traveling to Mexico I recommend a Passport card (easy to keep in a wallet) GE because I say no to the line and the free FMM.
[QUOTE=UCBaja2;6450131]If you're walking south you need a passport or passport card. If you don't have you'll likely pay the FMM fee.
If you're driving you most likely won't be stopped.
Entering USA you only need GE card.[/QUOTE]