Lindsey Graham Threatens to Impeach Trump if Mueller is fired. Lindsey Graham Threatens to Impeach Trump Sen. Lindsey Graham on Sunday threatened to end Donald Trump’s presidency if U.S. Special Counsel Robert Mueller is fired. Deep-State Lindsey was on Deep-State CNN on Sunday talking to Deep-State Jake Tapper. And talking like Deep Staters do. Talk tough but do very little. A GOP senator threatening the end a GOP president’s term. We thought McCain was out of town. It appears Lindsey got his copy of the Democratic talking points early Sunday from Chuck Schumer and friends.