The president has gotten off to a rocky second term. This seems as sound a take as any I have seen lately on the Obama administration’s competency deficit: Obamacare will fail if he doesn’t start paying more attention to the details of implementation, if he doesn’t start demanding action. And, in a larger sense, the notion of activist government will be in peril — despite the demographics flowing the Democrats’ way — if institutions like the VA and Obamacare don’t deliver the goods. Sooner or later, the Republican Party may come to understand that its best argument isn’t about tearing...