Donald Trump is the only President in American history to be impeached twice. He was accused of inciting an insurrection. As president, he tried to cling to power by overturning an election that he had unambiguously lost. He spread a big lie to convince his voters that the election was stolen from them. Having failed to force state officials to override the vote, he whipped up a violent mob and sent it to intimidate Congress into giving him what he wanted. His supporters ransacked the Capitol and threatened to hang the vice president, Mr Trump looked on, ignoring lawmakers’ pleas for him to come to their aid.