"Plenty of these companies have multinational presence, so the same people could end up being employed at the same companies even if they had never migrated. But the difference is that by migrating, they eventually become US voters."
Another benefit is that they reduce the population burden on their native countries.
"From my own observations (also shared by our enemies), immigrants themselves tend to be moderate ideologically, but a significant fraction of their descendants born in the US become staunchly anti-Western. This is the main deeper payoff we are expecting."
I see. In that case, should we castigate those immigrants (especially those with Aryan blood) who reproduce? I think at the very least if they are willing to accept a downgrade in living standards to pre industrial levels, the population issue could be resolved peacefully.
On a side note, I appreciate those parents who leave behind generational wealth for their descendants, as the offspring don't have to sell their soul to some (((corporation))) just to survive. This is in contrast to those parents who believe that their children (who were brought into this world without their consent) need to "pull themselves up by their own bootstraps".