According to Politico, Republican Rep. Ken Buck is the only GOP lawmaker who is publicly opposing a Biden impeachment vote set to take place this week. House Speaker Mike Johnson will reportedly hold a formal impeachment vote this week. House Republicans have a very slim 3-vote majority after a few GOP lawmakers retired this year. Rep. Ken Buck is the only Republican who is opposing a Biden impeachment vote this week, according to a whip count compiled by Politico.