"Who authorized granting Cheryl Mills immunity?" Rep. John Sensenbrenner asked.
"It's a decision made by the Department of Justice, I don't know at what level inside," Comey responded. "In our investigations, any kind of immunity comes from the prosecutors, not the investigators."
The FBI doesn't hand out immunity deals:
Comey added he understood Mills' immunity as a request pertaining to the production of her laptop during the investigation.
"The FBI doesn't grant immunity to anybody, the Department of Justice is able to grant very different kinds of immunity," Comey said. "If new and substantial evidence develops a witness lied [under immunity], of course the Department of Justice can pursue it. Nobody gets lifetime immunity."
Last Friday, House Oversight Committee Chairman Jason Chaffetz (R-UT) lashed out at the FBI over the immunity deals:
"No wonder they couldn't prosecute a case," Chaffetz said. "They were handing out immunity deals like candy."