Just wondering what you really believe.
You believe that the Constitution is based in Natural Law.
Do you believe Natural Law is in and of itself, moral?
Were the Framers Naturalists?
Going with your own answer, do you believe that Natural Law is a derivative of morality, vice-versa, or are they two separate standards/codes of conduct?
I'm no legal scholar or academic, but I'm of the opinion that Natural Law is inherently moral and hardwired into the human psyche in the way outlined by C.S. Lewis.