Mississippi Trump voters still back him, are open to challengers12:45
Mississippi voters talk with Joe Scarborough and Mika Brzezinski about the president's strengths and weaknesses and why though they still support Trump, they are open to primary challengers like Mike Pence or Nikki Haley.
Barnicle: Will GOP react to new Russia reports?11:38
How Trump's immigration policy impacts the border13:49
Tom Brokaw travels to revamped Nixon Library09:43
Russian sanctions haven't worked, says cyber expert07:50
How did Saudi crown prince cover come to be?08:52
GOP rep. criticizes Trump over shutdown possibility06:25