The U.S. Embassy in Mexico has issued a warning to American citizens with dual nationality regarding entry and exit requirements for the United States. The embassy clarified that U.S. citizens, even those with Mexican citizenship, must use their U.S. passport to enter or leave the country. This requirement applies to all dual nationals, regardless of how they previously entered or exited the U.S. The announcement aims to prevent travel disruptions and ensure compliance with U.S. immigration laws. Officials emphasize that possessing a Mexican passport does not exempt dual citizens from presenting a valid U.S. passport for international travel. The embassy encourages citizens to review travel documentation before any planned trips to avoid potential issues at border crossings. This policy reinforces the U.S. government’s stance on citizenship and travel documentation.