It’s hardly a secret what Mitt Romney is up to in trying to invoke Bill Clinton’s name in ads and speeches. Clinton was the good Democrat. The sensible centrist. And—let’s lower our voices here—the white one. It’s been transparent since it started in May, made all the more so this week by using Clinton to slam Obama on welfare. Clinton responded to that, and that was fine as far as it went. But I really hope he does more—a lot more. Clinton has tremendous power in this election, and I hope he uses the occasion of his convention speech, and for that matter the whole fall campaign, to destroy Romney, saying to every swing voter: “If you voted for me, you’d be nuts to vote for this guy. He’s making up a version of me to serve his own purposes, and he’s against almost everything I stood for and stand for.”