Rig, I know the issue of "anchor babies" and "birthright citizenship" is related, but this thread is really about a law that will require everyone to carry proof of legal resident status at all times.   And it's also about a law that can and probably will be used to disenfranchise a lot of Hispanic-American voters.
That is really a topic unto itself. It's both narrower than and broader than the issue of "birthright citizenship."   Can we please talk about that in its own thread?