I wouldn't say American Libertarian ideas conflict with American Evangelical beliefs, although it is perhaps a better debate topic.
I don't want to derail the thread, so will just read any response, and if further discussion is merited might make another thread on the topic of moral/religious principles and fair governance.
That said, here is the gist:
The whole point of a fairly free and unfettered system was that in Calvinist Tradition each could have a chance to attain their own success without the entrapment's of too much interference from class power brokers, institutions that exchange favors for power, or personal relationships interfering with fair distribution of goods.
Now Shapiro might be an Ayn Rand molded hypocrite on that front, (I'm not a fan of his Youtubbery , but have liked an article or two he penned) , but the concept "works" for America, although with a series of flaws, and of course not independent from the need for central government planning and provincial government strength.