Ronald Reagan might have told a Reason interlocutor that "the very heart and soul of conservatism is libertarianism," but he offered a nod to the technocratic impulse within the Republican coalition. "I cannot go along with the libertarian philosophy that says that all of the sin laws can be ruled out as simply trying to protect us from ourselves."
We might subsume the law in the rubric of evolutionary stable strategies: adherence to this code of conduct confers advantage to the adopter, and it's robust to adoption by somebody outside the current set of adherents.
But now we have a hostile takeover of the Jesus Teaches wing of the governing class, and the Jesus Teaches part of the old conservative coalition are not happy with either Donald Trump or Gary Johnson as least-bad presidential choices.
Given the choice of voting for Donald Trump, an objectively unacceptable candidate not simply to many conservatives but a majority of Americans; Hillary Clinton, another unacceptable candidate, though for reasons different than Trump; or Gary Johnson, who told Fox News this weekend that he would get rid of the Department of Education and many other parts of the federal government, conservatives still see themselves as homeless.The advocates of the "sin laws" (social conservatives, if you will) seek simply to make regular, however, a different set of market failures than those addressed by, e.g. the environmental laws. Put another way, Technocratic Expertise is not flawed per se; rather, Technocratic Expertise in the service of Godly Goals rather than Sinful Goals is desirable.
Especially if you are anti-abortion, which has always made Johnson "a nonstarter for social conservatives."