I made the case recently for why GOP policies are the best to create opportunity across the country for families of all backgrounds. I’ve held up my home state’s reforms in economic, education, and sentencing policies as examples of conservative governance that have made life better for minorities in Texas compared with other places around the country. And I’ve been honest about our party’s shortcomings — including my own — in engaging all Americans in our conversations about the future of this nation.

But we can’t do that if we’re pitting black against white against brown; rich against poor; women against men. Playing identity politics takes a page right out of the Democrats’ playbook, and we Republicans are better than that…

Mr. Trump’s absurdity reached a new low over the weekend, when he spit in the eye of every American prisoner of war, particularly Senator John McCain. But frankly, we should expect no better from a man who couldn’t be bothered to answer the call to serve his nation when it needed him most.

As a veteran and the son of a veteran, I find Mr. Trump’s brand of vitriol particularly offensive, and I have no confidence that he could adeptly lead our nation’s armed forces. His comments over the weekend should completely and immediately disqualify him from seeking our nation’s highest office.