What papers or forms are required to cross the border?
When crossing the Mexican border by land, a valid passport is necessary for each traveler. No longer is a birth certificate accepted in place of a passport. When flying into Monterrey, a valid passport is necessary. The flight attendants will distribute customs forms (one per person) and declaration forms (one per family) for you to fill out during the flight. If you do not yet have a passport, please look into applying for one now, as they do take some time. Click here to visit the U.S. Passport Services site.