[annalex]

applies only to animating the Legislative force.

Why do you say that? The Natural Law finds its implementation in the customary case law, not in the statutes.

[KC Burke]

I agree the common law is an entrypoint as well. My oversight due to thinking about the issues on this old thread The Case For and Against Natural Law (or Bork's Side-step)

In that thread, the point is made that Executives, sworn to a specific oath; and Judges, judging under a statute, all are best kept free of the tempation of resorting to their transitory opinion of Natural Law to over rule thier sworn obligation as office holders.