So they register by mail (as I did), checking the box that says they are a legal citizen. They go to the polls with a utility bill (as I did because I haven't changed my street address on my license since the PO box remains the same) and are permitted to vote. No evidence of citizenship is necessary in PA, that's for sure. That may become an issue in Hazleton, but it has to be an issue in those states with a high number of illegals, unless they have laws on voting stricter than PA.
Scary.