Rep. Ken Buck, R-colo., stated Sunday that lawmakers who deny the results of the 2020 presidential election are “lying to America.”

Buck’s statement comes as former President Donald Trump, who has consistently argued that the 2020 election results are illegitimate, is running for president again in 2024. Regarding the presidential election next year, Buck said that he believes the Republican Party can win over voters against President Joe Biden but that it needs to “move forward” from election deniers to do so.

“Everyone who makes the argument that Jan. 6 was an unguided tour of the Capitol is lying to America,” Buck said. “Everyone who says that the prisoners who are being prosecuted right now for their involvement in Jan. 6, that they are somehow political prisoners or that they didn’t commit crimes, those folks are lying to America. As a Republican Party, if we’re going to offer good solid policy answers to the real challenges we face in America, we’ve got to get past the lies, and we’ve got to have credibility with the American public. And I think we can do that. But we have to move forward.”

Buck was asked about House Speaker Mike Johnson’s attempt to reverse the 2020 election results, which was a lawsuit the state of Texas filed with the Supreme Court against several battleground states that went to Biden in 2020. While Buck defended Johnson for signing onto the suit, noting that “it’s been done dozens of times in American history,” he added that he hopes Johnson becomes more clear on his position on the 2020 election going forward.

“I hope all of my Republican colleagues become more clear and recognize the fact that Joe Biden is an existential threat to this country, and we need to defeat him, and we do that with someone who’s not lying to the country,” Buck said.

Trump is currently the expected nominee for the Republican Party in the 2024 presidential election, as he is still leading the party’s primary race. Other candidates in the race include former United Nations ambassador Nikki Haley, Florida Gov. Ron Desantis, and business entrepreneur Vivek Ramaswamy, among others.

Biden announced earlier this year that he will seek reelection alongside Vice President Kamala Harris. Should Biden remain the Democratic Party’s presidential nominee and Trump win the Republican Party’s nomination, it would set the stage for a rematch between the two candidates.

Polling data for the 2024 presidential election released Wednesday found that Trump earned 47% of support from the poll, while Biden only got 43%, and about 10% were undecided. Amid other polls showing Biden losing to Trump, some have expressed warnings against Biden running for reelection, with Rep. Dean Phillips, D-minn., a fellow 2024 Democratic presidential candidate, claiming that it is “delusional” to believe Biden could beat Trump next year.