Have you ever seen a candidate extract himself from such a maddeningly stupid argument so adroitly? He read viewers' minds — we were all thinking, "What's the difference between 'denounce' and 'reject?'" — and made Hillary look silly for trying to create a distinction. It's this seemingly effortless ability to rise above the tedious semantics of American politics that makes Obama so difficult to attack. Even if you play better than him, he's better at mocking the game. McCain's got his work cut out for him.