WASHINGTON — PAUL RYAN and Donald Trump sit down at Republican National Committee headquarters on Capitol Hill to hash out a couple little things, like who is running the party and who is the actual Republican. “Welcome to Washington, Donald,” Ryan says, shaking hands with the presumptuous nominee. “Reince says you’re far more gracious in private than in public and I sure hope that’s true.” Trump smirks and pulls out his bottle of industrial-strength sanitizer, squirting a prodigious amount on his hands. Trying to thaw the chill, the House speaker displays his best ingratiating Irish undertaker air. “Hey,” he says,...