Support WBURSen. Alexander Explains Decision Not To Call Witnesses In Trump Impeachment TrialPlay05:44Download AudioBrian NaylorJanuary 31, 2020 ShareSen. Lamar Alexander, R-Tenn., arrives for the impeachment trial of President Trump at the Capitol on Friday. Alexander, a key vote in the trial, says he plans to vote no on hearing witnesses. (AFP via Getty Images)
