Well, just like the positive effects of Laffer inspired tax cuts in Kansas, it's a case of "just you wait", apparently. He writes it's just the last hiccup in the third act of an action movie:
This isn’t the Republican nomination, where Trump could dominate. The general election is a new game. There’s no way for Trump to solve a problem this big, right?What a maroon.
That’s what you are supposed to think at this point in the movie.
Wait for the plot twist this summer. You’re gonna love it.