No doubt that it is the duty of judges to say what they believe the law is, but that does not mean they are the only ones - juries have their role to play.
The Claremont Institute recently launched the Center for the Jurisprudence of Natural Law . The Project is being led by Hadley Arkes, who has intervened in this space a few times. The Center will be leading with a conference later this year that will more fully explore the connections between the Constitution and natural law reasoning. I hope you make this site’s contents part of your reading. For starters, here is an opening piece by Arkes entitled “Turning the Tables on Obamacare: Returning to Natural Rights (link no longer available).”