Senate Minority Leader Chuck Schumer (D-N.Y.) said that he wants four witnesses to testify, including acting White House Chief of Staff Mick Mulvaney, in the event of a Senate impeachment trial for President Donald Trump.
Schumer wrote to Senate Majority Leader Mitch McConnell (R-Ky.) over the weekend, telling his counterpart that he also wants Robert Blair, a senior adviser to Mulvaney; former National Security Adviser John Bolton; and Michael Duffey, associate director for national security at the Office of Management and Budget, to testify.
