[Responsibility2nd]

pssshh!

Arizona tried this with a legal and Constitutional bill called SB 1070.

The feds declared it illegal, and that’s that.

[OneWingedShark]

Not quite, SB 1070 was about enforcing immigration, to counter this the court would have to declare that governors have no right to (a) declare invasion, (b) demand the Federal Government abide by Art 4, Sec 4 of the US Constitution, or (c) defend their states w/ the [State's] militia.

Also, Scalia wrote a good dissent, here, which I remember him mentioning something like the only sovereignty left after this decision was that of military/militia usage. [Sorry, I couldn't find the exact quote.]