Why Biden declared war on Trump — and poked at Warren

Why Biden declared war on Trump — and poked at Warren-politico: After calling for Donald Trump’s impeachment for the first time, Joe Biden experienced something here he rarely sees on the campaign trail: a sustained standing ovation. His Rudy Giuliani joke had the crowd roaring, as did his digs on Trump’s tax secrecy. It was just the kind of crowd energy that the Biden campaign had hoped to tap as it abruptly shifted gears on Wednesday, revealing a new intensity and an amped up response to the president’s relentless attacks.