Here's a thought…
Instead of trying to fight with the stupid-fuck states that are pressing so hard against a southern border wall, how about instead we just wall in those states (or at least wall them off from the rest of the country) and then build the wall on the border for those states that 'do' want it?
Let the fuckin illegals wreck those blue states, then when those states have had enough we just turn the entire land mass of those states into prison colonies.