I think you are partially correct in why this illegal invasion is seen as a gold mine for the biggest holder of “I owe You” scheme on this planet. Now who exactly is benefiting from this cheap labor and not actually paying into the system? Lord only knows.
This whole mess benefits the cream at the top of all societal foundations ... the political... the economic... the educational... and last but certainly not least religious. All are taking their cut.
we do know that most of the day labor is done as a cash deal and no SS taxes are paid there.
from personal experience, farmers pay the SS tax on their hired help for the most part. am reasonably sure most reputable businesses do also. especiaslly now since feds have introduced the “no SS# match to every employee = no tax deduction for any wages” policy.
the more paid in by illegal colonists the better tho.