Republicans can and should continue to stand for their principles on the many occasions when they conflict with Obama’s. What they shouldn’t do is conceive of their near-term political task as winning a series of confrontations with the president. Because they’re unlikely to win very often. Obama has inherent advantages in political debates with more than 200 House Republicans, and his re-election will only strengthen his hand, at least for now. The Republicans are better off sidelining Obama to the extent they can and fighting congressional Democrats — or, better yet, getting congressional Democrats to fight one another.