I, for one, tire of the notion that whatever the Feds pass trumps anything else simply because it has a new date on it. The Constitution is the Highest Law of the Land. ANYTHING that contradicts it, simply is not law, merely a waste of paper, and everyone from the citizenry to the states is not obligated to obey it. If a law is not specifically carrying out general principles found in the Constitution, it is simply not law, and the States are obligated to employ Nullification Doctrine.