Well now isn't that nice. This sets the stage for forced illegal immigration labor. Or anyone else they deem as an enemy of the MAGA State like black people. Or Gay &Trans people.
Also Private prisons stock surged when this failed. The Trump campaign appointed Steven Miller (AKA Mr. Nazi Jew hater and anyone of color) Miller as his deputy chief of staff for policy, which would likely task an immigration hard-liner to the job of implementing Trump's mass deportation plan.
Private prisons are going to ask for more money as they already house illegal aliens. They won't let them go in a timely manner either. If you get in trouble inside, and you will get in trouble that means they get to keep you in prison longer, and the longer you stay the more they make.
See where this is going? Internment camps galore.
Under state law, most California prisoners are required to work. Like many other states, California forbids slavery but allows involuntary servitude to punish someone for a crime. That distinction allows state prisoners and people in jail to work without many of the same protections — minimum wage and benefits — as other California workers.