Rep. Adam Schiff Adam Bennett SchiffTop Democrats call for DOJ watchdog to probe Barr over possible 2020 election influence Overnight Defense: Top admiral says 'no condition' where US should conduct nuclear test 'at this time' | Intelligence chief says Congress will get some in-person election security briefings Overnight Defense: House to vote on military justice bill spurred by Vanessa Guillén death | Biden courts veterans after Trump's military controversies MORE (D-Calif.) and "Fox News Sunday" host Chris Wallace clashed on Sunday over a watchdog report released last week that showed Democratic presidential front-runner Hillary Clinton Hillary Diane Rodham ClintonJeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Momentum growing among Republicans for Supreme Court vote before Election Day Warning signs flash for Lindsey Graham in South Carolina MORE didn't comply with rules set by the State Department.

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"She was mistaken. She thought it was approved, and the practice was allowed, and she was wrong," Schiff said about Clinton's use of a personal email server during her tenure as secretary of State.

"The report also makes clear that Secretary Powell also thought it was appropriate to use a personal server, private server," said Schiff, who is also a ranking member on the House Intelligence Committee.

Former Secretary of State Colin Powell also used a personal email account while in office, the report found.

Schiff claimed the report said Powell used personal email exclusively, which Wallace disputed.

Schiff also pointed out that Clinton turned over 55,000 pages of emails, while Powell did not.

"The fact that she provided 55,000 pages of emails mitigated the fact that she used a private server," Schiff said. "In the case of Secretary Powell, there was no mitigation. None of those emails were turned over."

Wallace pointed out that it took Clinton two years after leaving office to turn over the emails.

"It was two years later," Wallace said, adding that Powell's and Clinton's situations were completely different.

"I think we've shown that it is different, and it is a red herring, sir, and I expect more from you," Wallace said to Schiff.

— Updated 3:16 p.m.