President Donald Trump stands with Attorney General William Barr in 2019.AP Photo/Evan Vucci William Barr lamented the closing months of Trump's time in the White House in his new book. "Reasoning with him was hopeless," Barr wrote about trying to tell Trump the truth about his 2020 election loss. Barr also said Trump tried to get him to read an "amateurish" report about debunked election fraud in Michigan. Former Attorney General William Barr said President Donald Trump wouldn't listen to reason after losing the 2020 election and pushed "amateurish" claims about election fraud."It had always been difficult to keep him on track—you had to put up with endless bitching and exercise a superhuman level of patience, but it could be done," Barr wrote of his time in the administration in his new book "One Damn Thing After Another.""After the election, though, he was beyond restraint," Barr said of Trump.