Stay Safe
Leaving Mexico without snags
The northbound checklist most travelers don't think about until it's too late.
Northbound is where the real inspection happens — US Customs and Border Protection check vehicles, documents, and declarations. Most snags come from forgotten produce, an unreturned FMM, or an open insurance claim. Sort these in advance and the crossing takes a routine 30–60 minutes during off-peak hours.
Return your FMM
If you got a paper FMM at the southbound crossing, hand the bottom half to immigration before you exit Mexico. Online FMMs close automatically when you exit through an airport. Forgetting to return a paper FMM can complicate your next trip.
Close any active claims first
If you've been in an accident or had property damage, finalize the claim before crossing back. Driving across the border with an unresolved claim can void coverage. The adjuster's sign-off is the trigger to leave.
Declare honestly at US Customs
- Cash above $10,000 (per family group) must be declared
- Most fresh produce, meat, and dairy is restricted — leave it behind
- Alcohol and tobacco above the duty-free limit triggers extra fees
- Pharmaceuticals must be in original labeled packaging with a prescription
Vehicle inspection
CBP can inspect any vehicle at any time. Make it easy: clean interior, no loose bags hiding contents, glove box ready to open. Photograph any damage that happened in Mexico before you cross — useful for any claim follow-up.
Frequently asked questions
What's SENTRI and is it worth it?
SENTRI is CBP's trusted-traveler program for the southern border. The interview process takes a few months, but once approved, the dedicated lanes can cut northbound waits from 90 minutes to 5–10. If you cross more than a few times a year, it pays for itself.
Can I bring food back across?
Most fresh fruit, vegetables, and meat are restricted. Sealed commercial snacks, baked goods, and most cheeses are fine. When in doubt, declare and let the officer decide — undeclared items are confiscated.
What if I lost my FMM?
You'll need to visit an INM office before exiting and get a duplicate. Air travelers can sometimes resolve it at the airport but plan extra time.
Do I need to pay tolls in pesos?
Mexican toll roads accept pesos and increasingly accept credit cards. Carry pesos as a fallback, especially on the return drive when ATMs near the border may be busy.
