Keep going then to fix the problem. Mass jailing of all business owners who hire illegal immigrants. That’ll shut down all the farms, construction companies, hospitality industry, and on and on. No big shocker that the small businesses that most likely exploit illegal immigrants are right leaning.
Deporting 20 million undocumented workers will destroy agriculture in the US. Georgia tried that and it didn't work out for them. Florida tried that laat year and it went badly.