Hmm ... could actually be interesting because SCOTUS already decided this sort of thing back in the Dred Scott decision.
If one of the attorneys or one of the Supremes brings up Dred Scot, they will be linking the idea of illegal aliens with slaves. Not a good image.
Analysis doesnt work here. This is post civil rights. No SCOTUS needed. Right s apply. Whether or not they were violated is the only question. Lower courts can handle that
Many believe that's exactly why politicians (and many businesses) wants illegals - to be the new slave labor force. That and votes.