In an exclusive interview with Meet the Press, White House Chief of Staff Ron Klain talks about President Biden's plans for vaccine distribution. Sen. Dick Durbin (D-Ill.) discusses the future of the filibuster. Sen. Mike Rounds (R-S.D.) talks about former President Trump's impeachment. Andrea Mitchell, Yamiche Alcindor, Tim Alberta and David Brooks join the Meet the Press roundtable. Tom Brokaw announced his retirement after 55 years with NBC News.