A supporter of Trump's efforts to overturn his loss to Joe Biden in the 2020 presidential election, Greene has repeatedly and falsely claimed that Trump won the election in a landslide victory that was stolen from him. She called for Georgia's election results to be decertified and was among a group of Republican legislators who unsuccessfully challenged votes for Biden during the Electoral College vote count, even though federal agencies and courts overseeing the election found no evidence of electoral fraud. Greene filed articles of impeachment against Biden the day after his inauguration, alleging abuse of power.