Opposite of nullification
The new Arizona immigration law is drawing predictable responses from the national level. Comrade Obama calls it "misguided" and brings in the Department of Jesse Jackson.
Pretty much the same response that Comrade Bush (senior or junior) would have given. No state can be allowed to protect civilization; all states must be forced to assist in our national suicide.
FWIW, Manchurian Candidate McCain would have been even worse. Obama and the Bushes take the standard Republicrat side of this question for practical political reasons, namely because Florida, the only state where votes count, has a highly active Spanish constituency. Comrade McCain is different. He has a truly insane passion for eradicating borders, a truly destructive Ebola fetish for flaying off the skin of the nation and letting all the microbes enter without opposition.
I'm puzzled by one thing, though: Oklahoma
passed a tough immigration law three years ago without nearly as much screeching from the Stalinists. The Okla law was aimed in a different direction, focusing more on employers, less on police. And it has worked splendidly. Mexicans started moving out of Okla before the law was passed and continued moving out in large numbers. (When an ethnic group drops below a critical mass, the remnants have to assimilate, thus they no longer comprise an "immigration problem".)
And this is how the federal system is supposed to work. Different states try different solutions; states that don't have a particular problem don't need to do anything about that particular problem.
That's an obsolete theory, of course. Dim historical memory of a place called America. All gone.
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Later thought: maybe the diff between Okla and Ariz is also crude practical politics. Arizona is smaller than Florida, but it is a closely balanced 'swing' state. Okla is solid Republican in Presidential voting, so it basically doesn't exist in the minds of DC and the media.