I-9 requires you to check the immigration status for work authorization. The debate is whether you should be required to try to do it a way where that actually means anything. Democratic process in most states resists doing it in a way that actually does anything.

To note, I am for completely open borders but even I can tell you that states not using e-verify and just requiring an I-9 is almost hilariously comical attempt at checking immigration status, as there's little authentication against fake info let alone stolen identity.