That is correct. Immigration is not a state law, but your original argument was that the States could not enforce Immigration Law, and they can. The can also shut down the Border crossing station at their will.
If Governor Hall decided tomorrow morning that she had had enough illegal immigration, and she convinced the state legislature that they had also had enough, she could deploy the state national guard to the borders and close them down.
INS would not stop her, and Bush and his gang would have a hard time stopping her also.
Hell...the State of Texas inspects EVERYONE crossing over from Mexico to see if they have alcoholic beverages....if so, they collect a tax on it immediately.
no, my orginal STATEMENT was that matters of immigration are by virtue of the constitution exclusively within congress powers. You then tried to make some meaningless distinction between naturalization and immigration. I showed you a number of supreme court cites which proved you wrong. Twodees has been licking your butt since.