[TomGuy]

but they can be compliant if they "instead ask for proof of residency in a school district

Court challenges 'should' knock that down. Why should an illegal be allowed 'equal' access that legal residents have unless that state now allows 'equal' access for students from other states, as well?

[slippery slope -- lawsuits due to unintended consequences]

[Steely Tom]

lawsuits due to unintended consequences

There are unintended consequences... and then there are covertly intended consequences.