Indeed. If the states are soveriegn over immigration, then Arizona has no more right to tell California what to do than California has to do the same for Arizona.
Does Arizona really want to see all the illegal immigrant problems they are dealing with, turn into a legal immigrant problem as the ‘soveriegn state’ of California - right on the border, lets them in and gives them cards and the rest of it?
States are sovereign doesn’t just stop with Arizona. It would be an unmitigated disaster.
That's funny. Really funny because as I seem to recall, Thomas Jefferson wrote a letter to a friend in a 'territory'[?] who was concerned about what would happen if it was rejected for statehood and Jefferson's reply was basically: "Nothing bad; you just are your own country in that case."