There isn't one...
The most they could do would be to refuse to enforce it, and to direct state and local law enforcement not to assist in investigations or prosecutions of such crimes.
That might have administrative consequences, e.g. highway funds, but there's nothing the Federal government could do to compel cooperation, so far as I know. Well, I guess they could send in the Army, but not much short of that. Which wouldn't happen.
--Shannon
The most they could do would be to refuse to enforce it, and to direct state and local law enforcement not to assist in investigations or prosecutions of such crimes.
That might have administrative consequences, e.g. highway funds, but there's nothing the Federal government could do to compel cooperation, so far as I know. Well, I guess they could send in the Army, but not much short of that. Which wouldn't happen.
--Shannon