Here, I think, is where I diverge from Don C's view of this issue. If I'm reading you correctly, Don, you see in the tenth amendment an absolute prohibition on any federal government activity outside a strict-constructionist reading of the powers affirmatively given to Congress. That's certainly a position you're entitled to take. It is not a position universally acknowledged either by our present-day politics or by our nation's history. As BigA has observed, we've had more than 43 years now in which the constitutionality of the 1967 act could have been challenged, and no such challenge has even been made, let alone won.