The party's over: Mark Z. Barabak, Emily Cochrane, plus Jim Cavanaugh on extremism

<p>LA Times columnist Mark Z. Barabak and New York Times congressional reporter Emily Cochrane join Chuck to talk about the Republican Party. Jim Cavanaugh, former special agent in charge at the ATF, talks about the uptick in extremism — a topic we’re going to focus on this week with our new season of Meet the Press Reports.</p>