As
@SecRubio has said, anyone who uses an American as a bargaining chip will pay the price. If Iran does not end its cruel practice of unjustly detaining innocent Americans, the United States will take additional measures, including a geographic travel restriction on the use of U.S. passports to, through, or from Iran. Our Travel Advisory for Iran is at the highest level, Level 4: Do Not Travel. All Americans, including dual nationals, currently in Iran should leave immediately.