Levinson family says U.S. should do more to seek his release

      |Retired FBI agent Robert Levinson vanished in Iran in 2007; on Thursday, we learned he had been working for the CIA. Levinson's family now says the U.S. government has not worked hard enough to bring him home. Senior correspondent John Miller, an assistant director of the FBI at the time of Levinson's disappearance, reports.

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