With President Joe Biden abandoning his campaign for a second term and throwing his full support behind Vice President Kamala Harris, Republicans are still eager to go after his administration — and one of them is firebrand Rep. Marjorie Taylor Greene (R-GA). In particular, the far-right lawmaker took to X to accuse Secret Service Director Kimberly Cheatle of covering up mismanagement at the Secret Service in a new congressional hearing, following the failed assassination attempt on former President Donald Trump at a rally in Pennsylvania earlier this month. “I’ve never seen a more incompetent…