As usual, the issue boils down to liberty. The Constitution guarantees liberty. You nip at even a corner of it, and you strip all of us of our liberty. Once a tear, the complete rip isn’t far off. In this case, it’s the liberty safeguarded by the division of powers between the states and the central government.
So, S. 1194 would basically commandeer state officials into doing federal work, but we can’t have state cops or local police helping enforce illegal immigration law? What’s bassackwards here?