Guest: Rep. Jim Clyburn (D-SC), House Majority Whip. House Majority Whip Jim Clyburn (D-SC) discusses Joe Biden's ties to segregationist senators, and whether he plans to use his platform as an influential South Carolina Democrat to endorse ahead of his state's key primary. Clyburn also assesses the impeachment debate within the Democratic Party, and what he says needs to happen before impeachment proceedings would begin.