An historic defeat for a prominent GOP politician who dared to push back against Donald Trump. Does Liz Cheney’s defeat in Wyoming mark a more profound realignment of the GOP? And what does that mean for Texas? Brandon Rottinghaus of the University of Houston with more. Plus mayors in New York and D.C. are pushing back against Texas sending busloads of migrants to their cities. And a rise in mental health issues among students and how schools in places like Lubbock are trying to trying to help. Also flood control going green in areas once inundated by Hurricane Harvey. And a Politifact check about arming the IRS. All of that and more today on the Texas Standard: