Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Schumer Proposes Senate Subpoena 4 White House Officials for Impeachment Trial VOA News With the U.S. House of Representatives expected to impeach President Donald Trump this week, the top Democrat in the Senate is calling for the chamber that will conduct the impeachment trial to hear from four key Trump administration witnesses. Minority Leader Chuck Schumer wrote in a letter to Majority Leader Mitch McConnell on Sunday that the Senate should subpoena acting White House Chief of Staff Mick Mulvaney and top Mulvaney aide Robert Blair, as well as former National Security Adviser John Bolton and budget official Michael Duffey. Schumer noted House committees conducting the impeachment investigation asked all four officials to appear for questioning, but none did. McConnell has raised the prospect of a short trial with no witnesses called, and said he would be coordinating with the White House as he plans the trial. A McConnell spokesman said he would be meeting with Schumer to work out how to conduct the proceedings. Schumer also proposed in the letter the amount of time House members and White House lawyers would have for opening arguments, how much time Senators would have to question them, and the amount of time allotted for witness testimony, closing arguments and deliberations before Senators deliver their verdict. "We believe this proposal...will allow for a trial in which all of the facts can be considered fully and fairly, and in which final votes can be taken within a reasonable period of time, without any unnecessary delay," Schumer wrote. The House is expected to vote Wednesday to approve the two articles of impeachment the House Judiciary Committee passed last week. The trial in the Republican-majority Senate would take place in January with a conviction and Trump's removal from office unlikely. The House Judiciary Committee, over unified Republican opposition, accused Trump of abusing the power of the presidency by soliciting Ukraine to investigate one of his chief 2020 Democratic challengers, former Vice President Joe Biden, and then obstructing congressional review of his actions by refusing to turn over thousands of pages of documents to impeachment investigators and blocking key Trump aides from testifying. The rancor from the imminent impeachment of Trump played out on Sunday's news talk shows in the U.S., with no political agreement on the merits of the case against him. "We will have done our duty in the House," Congressman Jerrold Nadler told ABC's "This Week" show, two days after the House Judiciary Committee he chairs approved two articles of impeachment against Trump. .