There's been some discussion of late about whether President Trump will manage to eliminate NAFTA and TPP, two so-called "free trade agreements". Each is thousands of pages of legalese. Well, I hope so, because actual free trade is very simple.
Free trade is mostly certainly NOT thousands of pages of regulation.
Free trade: Trade whatever you want with whomever you want in any currency you want any time you want any place you want.
Free trade: Refuse to trade with anyone you want for any reason.
Free trade: If you trade fraudulently, expect to suffer serious consequences.
That about does it.