The last time I checked there were 8 or 10 legal farm work programs for foreign workers. The difference is that corporate farms want off the books labor, so Mr. and Mrs. Tax payer picks up the actual cost of the illegal.
I doubt you've ever spent a day in a farm field.
I have. And, hey, guess what? Taxes were taken out of my paychecks. Oh, and also, taxes were taken out of the paychecks of the illegals I worked side by side with!! But, then, illegals don't pay any taxes, now do they?