I think one of the reasons TPTB want illegals here is to camouflage the fact that so many have been killed.
Great that this man is telling the truth.
I think a bigger reason for illegal immigration is the PTBs' preference for humble, undemanding, starvable immigrant labor -- an appetite that has not changed since the 18th century, when indentured and convict labor and chattel slavery were the preferred sources of "workmeat". Nowadays, with labor imports constricted by law, the elites are sufficiently self-privileging and lawless that they bring people in illegally, flouting the laws they find inconvenient.
The reason for the shortage of college applicants, however, is due less to abortion, I think, that the simple refusal of UMC busy professionals to procreate -- contraception rather than abortion. I include myself, who was not attractive/attracted to the institution of laws and customs derogating fathers and catering to bra-burning, self-privileging termagants. I certainly didn't want a woman in my life who wouldn't even take my name, much less be inconvenienced by serial pregnancies. That lengthened the odds enough to ensure perpetual bachelordom "on the shelf". Mutatis mutandis, the country is littered with women who never had children, or confined themselves to just one voluntarily (sometimes ignoring husbandly and family entreaties -- after all, our bodies, our selves!), or even chose spinsterdom or lesbianism rather than put up with a (ugh!) man.