While Ken Buck may have absolutely abhorrent views on abortion, gun control, LGBTQ+ people, and climate change, the GOP lawmaker has said and done a number of things over the last several years that could lead one to believe he was relatively sane compared to his Republican brethren. Things like:

• Declaring in January 2021 that Congress did not have the power to contest the results of the 2020 election;
• voting against the effort to remove Liz Cheney from her leadership position for challenging Donald Trump;
• shaming his colleagues for claiming the election was stolen;
• calling on Trump to tell his supporters that violence of any kind will not be tolerated;
• admitting the GOP had no actual basis for impeaching Homeland Security Secretary Alejandro Mayorkas;
• opposing the push to impeach Joe Biden;
• publicly stating he is “embarrassed” and “ashamed” of his colleagues for withholding funding for Ukraine to fight Russia.

But now, it unfortunately appears as though Buck—who announced last year he will not seek reelection—is edging closer to the party’s extremists, if his calls for Kamala Harris to boot Biden from office are any indication.

Yes, Politico reports that on Monday the Colorado Republican introduced a measure saying the VP should invoke the 25th Amendment to remove Biden as president. The resolution states that Harris should assemble the cabinet to “declare what is obvious to a horrified Nation: That the President is unable to successfully discharge the duties and powers of his office.” Buck’s argument that Biden cannot do his job include special counsel Robert Hur’s claim that Biden is an “elderly man with a poor memory”; that Biden referred to the president of Egypt as “the president of Mexico”; and that Biden is 81. To be clear, Buck did not call on Mike Pence to invoke the 25th Amendment against Trump after January 6, and is apparently unconcerned about the fact that Trump would be 82 at the end of a potential second term—and have the mind of a 250-year-old.

Buck is not the first GOP congressperson to declare that Biden should be removed via the 25th Amendment. Earlier this month, GOP representative Claudia Tenney sent a letter to Merrick Garland claiming it was “incumbent” upon the attorney general to begin the process of removing Biden from office.