1. ArgentinaA valid passport is required for U.S. citizens to enter Argentina. U.S. citizens do not need a visa for visits of up to 90 days for tourism and business. U.S. citizens who arrive in Argentina with expired or damaged passports may be refused entry and returned to the United States at their own expense.
Different rules apply to U.S. citizens who also have Argentine nationality, depending on their dates of U.S. naturalization. For more information, check the Argentine ministry of the interior website at www.mininterior.gov.ar/migraciones/.