"Then they turn around and don't demand anything in return."
Have you been to a hospital emergency room in the past 3 years?
Do you bid on job contracts where your competition is using illegal labor that allows them to under bid you because you obey the hiring laws and pay payroll taxes on your employees?
Yes, right on, and on the PI level, do folks realize how many investigations we run on illegals using SSNs illegally acquired so that they can reap welfare benefits and be on payrolls? We have found up to four folks on one SSN. Yes, they were prosecuted and sent packing--for all that's worth. We have found that Contractors ARE pretty cautious who they hire, they can't help the SSN fraud and so far, 100% of those workers discovered either with fake SSNs or working while on Worker's comp were fired on the spot--good on them!
BTW, in San Antonio, there was a little group of Drs./Attys that had a thriving business on instructing how to circumvent being discovered (using SSNs and how to watch for PIs) doing this sort of thing under the guise of "Healthcare/Citizenship assistance" (Medicare/Medicaid fraud doncha know). "Oh no, we only offer advice on how to correct your illegal status", yeah, right.