His Excellency, the Most Reverend Paul Etienne, Bishop of Cheyenne (aka the whole state of Wyoming!) has a blog. On it, he recently posted a talk he gave in preparation for the new legislative session on the role of government, and the natural law. It is entitled Self-Evident Truths and the Natural Law. I would highly recommend you check it out!
I'm on the way to CCD right now, but if I have time to comment further on it, I'll try to later.
Kudos to His Excellency for stepping in to the Public Forum with such a well-reasoned talk!