Good point @nocturnal. I'm not sure how that one works out. I know in the days of fast and easy money the President could then hold federal funding to State programs hostage, if they (the States) don't comply with federal laws.
The whole thing has become an overblown mess of corruption and bribery. Whereas if what you say is true, and the state is not dependent upon federal funds. Then the people shouldn't have to be concerned with the federal law unless they are on federal property.