What does the Flynn memo mean for the Mueller probe?
It's now clear that Flynn, who once served Trump in the campaign, the transition, and the administration, is a valuable witness for the prosecution.
Matthews: We should ask 2020 candidates where they stand on guns01:09
After dramatic search, Trump chooses Mulvaney as chief of staff05:33
NC Dem. Chair: "This is a disaster for democracy"05:08
Trump under siege08:30
Cohen speaks out against Trump, saying it's "for the country"15:43
Matthews: Vote on MBS is "our country standing for something"01:19