How possibly can the AZ law violate the 10th Amendment?
That immigration efforcement is a role reserved for the Federal, not State govt. I guess one could argue if someone is breaking a federal law then state law enforcement would be obligated to “assist”, however, I don’t think SCOTUS, including Scalia, will buy that. Again, I am opposed to illegals and believe they should be deported, but I am not sure I am in favor of the AZ law.