Any time the actually do enact policies that work to limit undocumented workers they find that the corporate class gets pissed off; they like having people they can threaten and treat as actual slaves. They know damn well what works to curb unauthorized immigration - holding employers who hire the migrants accountable.

That cuts into their big money donors bottom line in two ways, 1. they have to hire workers who have at least a very basic understanding of their rights and demand wages actually in line with market value 2. They have to pay fines and deal with the public backlash for being criminals (not exactly the worst thing in their minds if we’re being honest cause their folks blissfully ignore things like criminal conspiracy or ethics provided their own the same team) but worse, they have to deal with the ‘unpatriotic’ label which tends to go further with the people who rabidly support the ‘solution’ to the issue they ignorantly latch onto as a means to continuously feed their rage addiction.