I see lots of finger pointing at the workers without permits, but zero, and I mean really ZERO finger pointing at their employers. So basically it's totally fine and dandy to exploit poor people, but a crime to be poor people. All the rest is technicalities.
In Europe it's the other way around: the businesses employing folks with no right to work get fined to death, with no direct repercussions on the workers (except they lose that income, which is another discussion)
Oh, there is such a rich history of exploiting the underprivileged in the US. The more interesting bits lately center around a special visa for agricultural migrant workers, called the H2-A, which offers some basic worker protections (a minimum wage indexed to inflation, freedom to leave the farm, etc) so the employers can continue to pay low wages for long hours, keeping food prices low and profits high.
Except the farm businesses complained, and the Trump Department of Labor rolled back a bunch of the protections. For example, apparently a sticking point was the requirement that vehicles transporting visa holders have seatbelts for all occupants, so that was eliminated. Another was the requirement that workers be allowed to have guests visit them on employer-provided housing; an often-cited example is worship services provided by a priest. Also rolled back, too onerous.
This is all being stressed at historically high levels as immigration crackdowns continue. Essentially, food production in border states is increasingly forced to go through this visa program that has terrible oversight and protections that I consider below-par. It's not a sexy issue to yell about with a megaphone though.