US alone by various estimates already has enough capacity to produce food to feed 2-4 billions of people. It is just most of this capacity is used to produce va

US alone by various estimates already has enough capacity to produce food to feed 2-4 billions of people. It is just most of this capacity is used to produce various grains for animals to produce cheap meat. So in general for US reduction in agricultural output just makes meat more expensive shifting diet towards starchy food. As for specifically for California reducing agricultural land just makes almonds more expensive and one can live without them. This does not argue that it is Ok to keep the status quo, but claiming that California agriculture is essential for US survival is just wrong.