The intellectual gymnastics you're undertaking here are hillarious.
You've now made the argument(s) that when Presidential Administrations violate the law, that the law transitions to make whatever violation of the law the President made the de facto new standard of legality because the President's illegal actions created a new legal precedent; and you've buttressed this hot mess with an assertion that the Code Law (and there by our entire legal structure, including Congress which has criminalized marijuana) is invalid anyway because we're actually guided by common law where it conflicts with Code Law anyway, so why have a Congress in the first place.
This is so stupid that it actually hurts.