"aliens who have once passed through our gates, even illegally, may be expelled only after proceedings conforming to traditional standards of fairness encompassed in due process of law."
From a Supreme Court decision in 1952, even undocumented immigrants are subject to the due process clauzes of the Constitution: https://tile.loc.gov/storage-services/service/ll/usrep/usrep345/usrep345206/usrep345206.pdf
Per Evenwel v. Abbott (2016), even those who cannot vote have a say in policy "Nonvoters have an important stake in many policy debates and in receiving constituent services. By ensuring that each representative is subject to requests and suggestions from the same number of constituents, total-population apportionment promotes equitable and effective representation."
Undocumented immigrants are also counted im the census, and thus are represented in Congress and the Electoral College. And since they are represented in congress, they are constituents of their congresspeople just the same as citizens or documented immigrants.
This is the same dude openly supporting the ethnic cleansing of Palestine. Forgive me if i don't believe he is being genuine.