Your drivel is not worth rebuttal.
If you rebutt, he either shouts squirrel, pretends to misunderstand the rebuttal, fires an ad hominem, or changes his initial assertions and insists he never said what you're disputing. So why bother? If he's too stupid to grasp the difference between an undocumented alien and a resident foreign national (who is by definition, by making their presence and request for public assistance a matter of record,
documented ), then why bother? If he's playing some chickenshit game feigning stupid, at this point a really generous assumption, then again, why bother?