Doesn't matter. If they are not in jail or prison, they are considered "free" and therefor to be counted in the census under the Constitution. Remember that document? You MAGATs scream bloody murder when a (D) POTUS proposes to allegedly violates it, yet turn a blind eye when your #CorruptCaligula actually DOES.
But don't worry, RB. The vast majority of undocumented persons do not return the census forms; they live in the shadows and don't want to be fingered by Trump's ICE goons. So they don't register to vote, they don't apply for social security cards, they don't get "welfare" or food stamps