"MICHAEL GERSON: I think Republicans have seen what happens when they don't really confront him. And he takes the stage and knows how to take it. I think there's a serious issue here. This is not all fun and games for the Republican Party. There is one type of populism that is kind of against ObamaCare, is concerned about government's role in our life. And the Republican Party has incorporated that populist, the Tea Party populism. There’s another kind of populism that is xenophobic. The resentment of outsiders, of Mexico, of China, and immigrants. That's more like a European right wing party, a UKIP, or a National Front in France. Republicans can't incorporate that. They have to make clear that there are lines here. This is not the party. And that is going to take, I think, a serious early effort to define that clearly."
