Civis has a few nagging issues with traditional Natural Law. First, a gripe: most of the popular literature about Natural Law boils down to what the author thinks just has to be right. That's no help.
My biggest problem is the assertion that you can't have natural law without God. I have no problem with God, but people put forth the "natural law" as a basis for regulating society that is independent of theological strings. It seems to me that either Natural Law as a non-relgions moral basis for regulating society, or God as the foundation of Natural Law has to go. Right?
Second, can you develop moral norms from the natural law? I'm not entirely clear on that. If I want to know whether I would without food and water from my grandfather who is PVS, will the Natural law tell me? If not, what is the purpose of Natural Law.
Bottom line here: I don't see how Natural Law can be a way for Americans to agree on the best way to regulate society.
The Devil's Advocate