Murkowski, as she breaks with leader mitch mcconnell in a small but maybe critical crack in the gop wall of support for the president's impeachment defense. live with how that plays out. as the year starts to close out, what a year it's been, i guarantee you've forgotten some of the biggest moments of 2019 because these days, time is a flat circle. a look at how what the white house did this year will affect what they want next. joining me now fran chess ska chambers, robert costa, a political reporter for the "washington post" and moderator of washington week on pbs, scott wang is senior staf...