With a House impeachment vote a foregone conclusion, the battle to remove President Trump from office has moved to the Senate. Minority Leader Charles Schumer grabbed control of the debate Monday with demands for what he called "fairness" in the president's trial. Schumer wants the Senate to allow testimony from four witnesses the House did not interview: former national security adviser John Bolton; acting White House chief of staff Mick Mulvaney; key Mulvaney aide Robert Blair; and Office of Management and Budget official Michael Duffey. House Democratic impeachers wanted the men to testify, but after the White House, claiming privilege,...