As others have pointed out in the thread, those who slurp up the surplus value of the labor of these undocumented workers would hate to lose this leverage of "Oh you want the same rights American workers get? Don't want me making a phone call to my buddy over at the police department!"
The purpose of a system is what it does.
Oh yes. I mean ICE could raid some of those big meat packing factories tomorrow, but obviously that would cut down on donations.
Sorry is this an argument for or against stronger immigration enforcement?
Yeah if they actually wanted to solve this "problem", they would go after the business owners who incentive them coming here via pay.