You mean you want to make it illegal for everyone except wealthy large scale internationally financed government regulated lettuce? What will that do for grocery prices?
Are you really so dumb of a grower you don't think communities can figure out how to grown inexpensive vegetables. Completely cutting out all the middlemen?
I can grow enough greens to feed a family of 6 big salads a few times a week in two seedling trays and a windowsill.