Comey will field questions Thursday from the House Oversight and Government Reform Committee about an Federal Bureau of Investigation announcement that dispersed the threat of criminal charges but also revived public scrutiny of Clinton's handling of classified information.
"I stand by what I said: I did not send or receive any material marked classified", Clinton told ABC News, in a series of interviews Friday after the shootings in Dallas that also touched on the investigation into her email system.
Under an onslaught of Republican criticism, Comey vigorously defended the government's decision and rejected GOP accusations that the presidential candidate was given special treatment. "But I think clearly, Hillary Clinton, having gone through all that she's gone through, has learned a very, very valuable lesson", Cummings said.
"I hope they know that view, not just my view.my team was honestly held, fairly investigated and held with unusual transparency", Comey added.
He said during a press conference on Tuesday that while FBI investigators found no "direct evidence" that Clinton's email domain was successfully hacked, he assessed that "it is possible that hostile actors gained access to Secretary Clinton's personal email account".
COMEY: She used multiple devices during the four years of her term as secretary of State.
LISA DESJARDINS: He drew a distinction with a similar case, that of General David Petraeus, who agreed to a plea deal in 2015 over mishandling classified information.
While Clinton handled at least three emails with classified information, Comey suggested that she may not have understood the classified marking before paragraphs containing secret material.
Although Kirby declined to provide specific information about the State Department's latest review, he said it would aim to be "as transparent as possible about our results, while complying with our various legal obligations". Earlier this week he said former officials could face loss of security clearances or other administrative sanctions.
Committee chairman Jason Chaffetz, R-Utah, told Comey that the FBI's decision showed a "double standard" for powerful people. Had the "average Joe" done what she had done, he said, that person would go to prison.
JAMES COMEY, FBI Director: The recommendation was made the way you would want it to be, by people who didn't give a hoot about politics, but who cared about, what are the facts, what is the law, and how have similar people, all people, been treated in the past?
But Democrats commended Comey for weathering Republican attacks on the investigation, with Rep. Jim Cooper, D-Tennessee, accusing some committee members of trying to be "armchair prosecutors" in a partisan fight.
Following the hearing, Clinton's campaign released a statement saying Comey's testimony "shut thte door on any remaining conspiracy theories once and for all". "This was not a Republican witch-hunt", he explicitly said.
She then asks Comey to explain how he concluded Clinton did not run afoul of that law.