Emotions can run high on all these SC issues--and "states rights" is a HUGE issue.
Yet on this one, I think SCOTUS is agreeing that "immigration" IS a Federal issue, and states cannot pass laws that supercede or infringe on those laws.
However, as I hope Scalia's dissent will point out, the frustration the States have with this President's failure to enforce Federal law needs to be addressed. And perhaps the best way to address this concern would be for the states--and Congress--to bring to the Court a direct and immdeiate challenge to the UNCONSTITUTIONALITY of an Executive Branch order that blatantly declares the intent to NOT uphold Federal law!
Depending on Scalia’s dissent, that may embolden the States to do just that.
Unfortunately (or fortunately), the SCOTUS won’t be in session again until just about time to vote the current WH resident out.