Ron Brownstein: “Attracting and sustaining majority support has traditionally represented a North Star for American presidents. The showdown over the shutdown, perhaps more than any earlier decision, makes clear that Trump is setting his course by a very different compass. Trump has abandoned any pretense of seeking to represent majority opinion and is defining himself almost entirely as the leader of a minority faction.” “That carries big long-term risks for the GOP, as the Democratic gains in the House last November demonstrated.