The regulation in matters of immigration and naturalization is strictly a power of the federal government. Yes, but they can delegate it to local authorities if they choose...and just this past week, they DID choose. Seems Florida local authorities now have the authority to arrest your precious illegal aliens.
Yep. However, other than what the feds allow, the states are as impotent in regulating immigration as Twodees or the Marine professor are in playing constitutionalist.