I have long thought that someone should set up trading posts in AZ to sell stuff forbidden in California. The Colorado Indian Tribes Reservation, which is crossed by I-10 would be ideal.
They could sell cheaper gasoline, much cheaper brand name cigarettes and other tobacco, foie gras, shark fins, Flamin Hot Cheetos, banned beauty products, kangaroo products, flame retardants, snake skins, lead, zinc or copper fishing weights, etc., etc.
Ehrenberg and Yuma.