I think that you're exactly right. This particular "disease" seems to be the side-effect of a traditionally or nominally "Christian" nation in the throes of ever-increasing post-"Enlightenment" secularization (or secular humanization, if you like), for better or worse, depending on one's perspective.
It amounts to a society that is highly ambivalent and "confused," to say the very least, and this confusion will certainly continue to manifest itself in our presidential candidates.
To be fair, though, "moral confusion" is not confined to US borders, but is one of the hallmarks of modernity in the wake of "God's death." Nietzsche both recognized and foretold this with great candor.
yes, digressing a little, but i would say the realms developed from which the bible was touted, and the realms developed from which the koran held sway have both had their own detailed periods of renaissance... but in this life i can clearly define which one and WHY i would choose to be brought into... even though, as you say, the one both you and i know is currently experiencing a period of confusion and decay... what i can also say though from this realm that i know, is that the book that is a major pillar of our realm, is essentially a good book - no matter how derided... it has just been twisted and manipulated too many times, and, the message lost in my opinion... and so, knowing that the book itself has become more or less a tool for the ages, i can fully accept ron paul using it at he pleases, if only it enables him to implement a monetary system that will largely destroy the abuse of money - money should be a tool for the people... not a tool for the few... and, in that, paul speakes a gospel not unlike that found in the good book