(Know Before You Go)…That suggestion from the Customs and Border Protection.
The CBP strongly suggests that those traveling to Mexico over the Holiday weekend find out ahead of time what they can and cannot bring back with them from Mexico. That information is available on the CBP website. To make crossing the border back into the US it is recommended travelers have their documents, passports and any other documents needed, ready when approaching the CBP officer for processing. Truthfully declare all items being brought back from Mexico.