For only the third time in the nation's history, United States Senators like Wisconsin's Tammy Baldwin will weigh in on the possible removal of a sitting president. The trial gets underway on Tuesday with the House impeachment managers arguing their case against President Donald Trump. Baldwin hopes testimony and evidence is allowed in the Senate trial so her colleagues can act as impartial jurors.

Senator Ron Johnson told the Milwaukee Journal-Sentinel last week that he does not believe the Senate should be in this position, calling out the partisan nature of the impeachment process. The U.S. Senate will first debate a resolution to set up the ground rules at 11:30 a.m. Tuesday before turning the floor over to the House impeachment managers for opening arguments.