The conservative-libertarian marriage is on the rocks. So says the Instapundit, Glenn Reynolds, who sees a “conservative crack-up” afoot. Ryan Sager agrees. Jonah Goldberg of National Review says there will be no crack-up, but doesn’t deny there is marital strife. The relationship between conservatives and libertarians has always been troubled, he argues. Too often, though, the idea of a conservative-libertarian divorce reads like an ultimatum from libertarians, who occasionally express so much frustration at conservative apostasy they threaten to walk away. If we’re going to follow the marriage analogy to its grisly end, this dynamic is akin to a mouthy,...