We should know the pattern by now. Barack Obama has a way of seeming to let things drift, even dangerously so. His supporters start to panic; his enemies start to sniff confidence like a junkie out of a brown paper bag. Scott Brown’s remarkable victory in Massachusetts provided the glue, and the Republicans and the media almost passed out with the rush — and still the president remained somewhat aloof; distant. As health insurance reform looked dead in the water, Obama seemed equally inert. The mood on the liberal blogs went from depression to panic. His presidency was over! Liberalism’s...