House Oversight Committee Chairman Jason Chaffetz Jason ChaffetzThe myth of the conservative bestseller Elijah Cummings, Democratic chairman and powerful Trump critic, dies at 68 House Oversight panel demands DeVos turn over personal email records MORE (R-Utah) says Hillary Clinton Hillary Diane Rodham ClintonButtigieg stands in as Pence for Harris's debate practice Senate GOP sees early Supreme Court vote as political booster shot Poll: 51 percent of voters want to abolish the electoral college MORE’s actions as secretary of State have raised too many red flags for Congress to stop investigating her just because she lost the presidential election.

“We can’t just simply let this go,” Chaffetz told host Martha MacCallum on Fox News’s “America’s Newsroom” Wednesday.

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“If the president or president-elect wants to pardon Secretary Hillary Clinton for the good of the nation, that is their option," Chaffetz added. "But I have a duty and an obligation to actually fix the problems that were made with Hillary Clinton.”

During the 2016 campaign, Donald Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE repeatedly promised to prosecute Clinton for her use of a private server while she led the State Department.

Trump has dialed down his rhetoric since winning the White House, however, noting last week that Clinton has already “suffered greatly” for her actions.

“It’s just not something that I feel strongly about,” he told New York Times reporters.

But the House Oversight chief has indicated no such shift, saying the day after the election that he would be "totally remiss" to drop his investigation over results at the ballot box.

“A political election does not extinguish the need for transparency, truth and justice,” Chaffetz said. "We want to get to the truth."

He added, “There are tens of thousands of documents the State Department still has not turned over to the United States Congress that should be available. There’s issues relating to the Department of Justice. I still think that the federal government needs to provide to Congress the records which we sought.”