In my area, if you are white, you must be at least 16 years old to pick fruit...If you are an illegal Mexican, the entire family is out in the field...
Even back in the 60s, if a farmer could get a family of Mexicans, he wouldn't hire white people...
Hardly anyone is my area has used humans to pick blueberries or cherries in years...
When a guest worker program is established, and it's a when, no it, some of these same employers may be surprised to learn that LEGAL migrant workers have the protection of our labor laws and access to the legal system.