Petraeus admitted to an extramarital affair with his biographer, Paula Broadwell, and on Friday resigned as head of the CIA. 

Many other members of Congress are not as eager to dismiss Petraeus's affair, and the FBI investigation.

Many lawmakers have raised questions about the timing of the FBI's notification. The leaders of the congressional intelligence committees, in particular, believe they should have been told before the news of the investigation became public last week.

Agents searched Broadwell’s home in North Carolina on Monday night, apparently looking for sensitive documents. The investigation has also uncovered a possible connection to Allen, the top U.S. commander in Afghanistan, through the woman, Jill Kelley, who filed the complaint about threatening emails from Broadwell that led to the FBI inquiry.