Rep. Raul Labrador, a newcomer to Washington, reminded the crowds at the Conservative Political Action Conference (CPAC) of the current context: “We weren’t elected because the American people love Republicans. We were elected because the American people love Republican principles.” Not to throw cold water on a sentiment whose intent I can only applaud, still, it’s hard not to offer a challenge: What principles? Craven accommodation to the military-industrial complex? Empty “limited government” windbaggery? Inertia? The American people do respect many of the principles that have become commonly bandied-about in American politics, associated with the Republicans since Reagan or before....