evidence: Sen. Mitt Romney is bracing for "unimaginable" consequences as President Donald Trump and his allies seek revenge over the Utah Republican's impeachment vote. [...] More recently, Trump called Romney a "pompous ass" on Twitter last October after Romney blasted Trump for pressuring Ukraine to investigate the Bidens. And just a few weeks later, Romney admitted that he was behind an anonymous Twitter account with the name "Pierre Delecto" that liked critical tweets about Trump. [...] Sen. Mitt Romney, R-Utah, became the lone GOP senator to break with his party Wednesday, announcing in a speech on the Senate floor that he would vote to convict President Donald Trump of abuse of power — one of two articles of impeachment — in a vote expected later in the afternoon.