What about Illegal doesn't the left understand? If you don't have documentation it is against the law to be working in this country. So how can they not be paid fairly? This is one of the most moronic things I have ever heard said. Someone really needs to get dictionary and the copy of the law that forbids employers from hiring people without a visa or social security number and explain it to her.
I doubt it will help, but at least that way she may get a clue.