U.S. EMBASSY & CONSULATES IN MEXICO U.S. citizens are reminded that if you enter Mexico by land and plan to travel beyond the immediate border area you must stop at a National Migration Institute (INM) office to obtain an entry permit (Forma Migratoria Multiple, or FMM), even if not explicitly directed to do so by Mexican officials. … Continue reading Message to U.S. citizens in Mexico; passport, entry permit, and or residency card must be carried at all times or face INM detention