They've been deporting those who are there legally too.
With an insufficient workforce, pay rates going up isn't necessarily enough to get you workers. Moving regions to get a new job isn't usually cheap or fast.
I don't know if the previous pay rates were illegally low (the US's definition of illegally low is itself low), but that doesn't necessarily mean that they couldn't & wouldn't pay ~$20-30/h if there were workers available.
Going from a labour-cheap world to a labour-expensive world also implies that people want to increase mechanisation and automation, and that's not cheap or fast either.
Surely $75k isn't nearly enough to afford a pardon?