Is there a lawyer in the house? I'm reading about Obama's contest of the Arizona Illegal Immigration Law and have the impression that any action with respect to the illegal status of Illegal Immigrants falls solely to the Federal government. If an Illegal commits a state crime, drugs, murder, etc, they can be charged by the state for that crime, but the logic seems to be that only the Federal government and federal officers can take action against an Illegal. Is that correct? Also, are there any other uniquely federal crimes, treason, espionage, terrorism that can only be prosecuted by a federal officer? If a NY City policeman captures a terrorist is that any less legally binding than if he captures an Illegal Alien?