After hearing testimony from four families, U.S. lawmakers passed a resolution calling on Iran to release three jailed Americans and provide information about a former FBI agent who disappeared in Iran in 2007.
As the June 30 deadline for a nuclear deal with Iran approaches, the families say it's time for the U.S. to push hard on this issue.
Among those who spoke Tuesday before a hearing of the House Foreign Affairs Committee was Daniel Levinson, son of former FBI agent Robert Levinson.
The younger Levinson described his father as the longest held American hostage in history.
