Sen. Murphy: Trump 'is jeopardizing American national security'

05:18

Senator Chris Murphy (D-CT) joins Andrea Mitchell to discuss the national security implications of the Trump White House slow walking the transition process and Trump firing Defense Secretary Mark Esper. Murphy says, "The transition is only 10 weeks long. If the president denies Joe Biden access to this information, it provides an avenue for our adversaries around world to try to take advantage of this vacuum of an administration that may not have all the information it needs."