Democratic lawmakers\u0026nbsp;on\u0026nbsp;Tuesday reiterated\u0026nbsp;their belief that the Senate impeachment trial of President Donald Trump is a \u0022rigged\u0022 process after Republicans unanimously rejected calls for more evidence and witnesses on the president\u0026#039;s alleged attempt to bribe the Ukrainian government last year.Senate\u0026nbsp;Democrats called for the release of\u0026nbsp;documents from the Department of Defense and Office of Management and Budget pertaining to correspondence in which a budget official wrote there was \u0022clear direction from POTUS to continue to hold\u0022 military aid from Ukraine. They also sought records from the State Department and the White House and attempted to compel the testimonies of White House Chief of Staff Mick Mulvaney and former National Security Adviser John Bolton. Bolton\u0026nbsp;has said he\u0026#039;s open to testifying and has signaled he may have information pertinent to the trial.The Senate voted 53-47 along party lines to reject amendments aimed at bringing more information and witnesses to the Senate floor.\u0022What are Republicans afraid of?\u0022 asked Sen. Bernie Sanders (I-Vt.) in a tweet, noting that Senate Majority Leader Mitch McConnell (R-Ky.) has stated explicitly that the GOP is consulting with the White House on the trial—the equivalent of jurors coordinating with a defendant.Senate Republicans, working directly with the White House, voted to prevent witnesses from testifying in Trump’s impeachment trial. What are Republicans afraid of? Today was a bad day for our country, for our Constitution, and for the rule of law. https://t.co/NMWX25rUoH— Bernie Sanders (@SenSanders) January 22, 2020Sen. Elizabeth Warren (D-Mass.) added in the early morning hours of Wednesday that Republicans are overseeing a \u0022rigged\u0022 impeachment trial \u0022designed to protect President Trump.\u0022The rules that Senator McConnell \u0026amp; the Republicans rammed through the Senate tonight are designed to protect President Trump – not guarantee a fair \u0026amp; honest impeachment trial. The rules are rigged.— Elizabeth Warren (@SenWarren) January 22, 2020The Senate also rejected a measure to allow more time to respond to any motions during the trial, with only Sen. Susan Collins (R-Maine) voting with Democrats.Under the Senate rules put forward by McConnell and adopted in another party-line vote, the House managers overseeing the Democrats\u0026#039; case and Trump\u0026#039;s legal team will each have 24 hours to argue their cases regarding impeachment. Senators will then have 16 hours to ask questions before the Senate again considers the possibility of subpoenaing more witnesses or documents.Rep. Jerrold Nadler (D-N.Y.), a House manager and the chairman of the House Judiciary Committee, accused the Republicans of aiding in a \u0022coverup\u0022 after they voted down the measure to subpoena Bolton, leading White House Counsel Pat Cipollone to respond that Nadler wasn\u0026#039;t \u0022in charge here.\u0022Chief Justice John Roberts admonished both men, asking them to use language \u0022conducive to civil discourse\u0022 and reminding them they were \u0022addressing the world\u0026#039;s greatest deliberative body.\u0022The admonishment drew skepticism from Rep. Ro Khanna (D-Calif.).\u0022Is there any American who agrees with Chief Justice Roberts that the Senate is the \u0026#039;greatest deliberative body\u0026#039; after the string of 47-53 party line votes?\u0022 wondered KhannaIs there any American who agrees with Chief Justice Roberts that the Senate is the “greatest deliberative body” after the string of 47-53 party line votes? Even constructive myths need to have an ounce of plausibility. https://t.co/z7L95Erfrv— Ro Khanna (@RoKhanna) January 22, 2020The House managers and Trump\u0026#039;s lawyers will begin arguing their cases Wednesday afternoon.