US Senator Mitt Romney (R-UT) is seen during a recess of the impeachment trial proceedings of US President Donald Trump on Capitol Hill January 30, 2020, in Washington, DC. - The fight over calling witnesses to testify in President Donald Trump's impeachment trial intensified January 28, 2020 after Trump's lawyers closed their defense calling the abuse of power charges against him politically motivated. Democrats sought to have the Senate subpoena former White House national security advisor John Bolton to provide evidence after leaks from his forthcoming book suggested he could supply damning evidence against Trump.
. (Photo by Mandel NGAN / AFP)