Bartering can’t be controlled. Friends helping friends by exchanging skills for....whatever. No permit needed. Even if bartering is outlawed, they couldn’t control when friends and neighbors visit one another. Just be sure you know who your true friends are BEFORE the crash comes down and spies are everywhere.
I think the best place to be in the event of economic collapse is the small towns of America. We already have a local network of trusted contacts that are themselves interconnected with surrounding small towns.
I’ve been working on that here in the neighborhood. Funny...a lot of “neighbors” are following that lead to establish relationships.