I have absolutely no problem with that arrangement, and that's the way it should be. Those people are not "wetbacks".
God bless them for their work ethic, and for doing it the right way.
The farmer pays for their food on the road trip, and maybe breakfast during the harvest, but brings them into town in the evening. Our small convenience store is overwhelmed with sales of quart beer and fried food selections. Great for the store owner, but no fun to be in line. But I confess, being 6’3” behind 5’3” people makes me feel like Jeb Bush.
Plus, that’s all they spend on themselves, the rest is sent back to their families...