Rep. Liz Cheney and former Vice President Dick Cheney walk through the Capitol Rotunda on the first anniversary of the January 6, 2021, insurrection.Manuel Balce Ceneta/AP Former VP Dick Cheney called Trump "a maniac," per a new book by Jonathan Martin and Alexander Burns. The elder Cheney backed his daughter Liz in her vote for Trump's second impeachment, the book said. Rep.