Sen. Alexander, a key impeachment swing vote, has announced that he will not join Democrats in voting to call witnesses in President Trump's Senate impeachment trial.

Sen. Alexander, a key impeachment swing vote, has announced that he will not join Democrats in voting to call witnesses in President Trump's Senate impeachment trial. https://t.co/6R414a1apf

— MSNBC (@MSNBC) January 31, 2020