Impeachment trial day 9: Key Republican says he will vote against calling witnesses
Senator Lamar Alexander, who had been considered a pivotal vote on witnesses, said late Thursday that he will not vote for witnesses in President Trump's impeachment trial. CBSN political contributor Molly Hooper, CBS News White House reporter Kathryn Watson and Loyola law school professor Jessica Levinson joined CBSN to discuss the ninth day of the impeachment trial.