Two months ago, we reported on Morning Joe going “Crazy over Trump’s Mental Health.” The show was back on that beat today, with two variations on the theme. First, panel members were able to cite a Wall Street Journal editorial harshly criticizing President Trump for his tweeting habits, describing him as a person “with a propensity for self-destructive behavior [who] can’t seem to help” himself and who is his own “most effective opponent.” That same Wall Street Journal editorial reports that a recent Trump Twitter burst came in response to a Morning Joe segment on the immigration executive order. Second,...