Why not let the market decide? The American market, instead of illegal labor without reasonable income and workplace standards imported from the third world? What we have now is an artificially subsidized labor supply. Of course you have cheap lettuce. Cheap lettuce is very important.
The minimum wage is NOT letting the market decide.
Cheap food, shoes, clothes, autos.
Yep Americans like having their goods for sale at cheap prices. There is a reason Wal-Mart is the #1 retailer. Also there is the stigma of jobs like vegetable picker and toilet cleaner.
A question, do you think that American parents want to have their children to have vegetable picker or janitor as a life long career?