GOP Sen. Joni Ernst warned that the GOP could swiftly move to weaponize the impeachment process if a Democrat wins the presidency in 2020, proclaiming 'this door of impeachable whatever has been opened.' Ernst told Bloomberg News in an interview that 'we can have a situation where if it should ever be President Biden, that immediately, people, right the day after he would be elected would be saying, 'Well, we're going to impeach him.'' 'OK, so impeachment is only 'overturning the will of the voters' if a Republican is elected. Got it,' wrote Indivisible co-founder Leah Greenberg... a move Democratic lawmakers and advocacy groups decried as an 'abhorrent dereliction of duty.' Every other Senate impeachment trial in U.S. history has included witnesses, according to an analysis released last week by Citizens for Responsibility and Ethics in Washington (CREW).'