Throw a few seeds out in the backyard.
Lettuce grows readily in every part of the US.
Unless you think dollar-a-head lettuce is worth destroying our national security, sovereignty and the rule of law.
By the way, your number is alarmist bilgewater.
As I said in the previous post, at $20/head it'd be worth grow lights and CO2 cylinders...
Numbskulls like this poster don't realize we're already paying $20/head for lettuce. Just because you don't see it in the direct price at the supermarket doesn't mean the total net carrying cost comes in any less.
How come a state like Calif, with something like the 5th largest GDP in the world, isn't able to cover it's basic operating costs without floating huge bond issues? It's the other $19/head that is being incurred by the taxpayer in the back-end (literally as well as figurtively) to support millions of low-skill, low-value add freeloaders.