Brexit was a disaster from day one sold by populist politicians and not surprisingly cheered on by some of the resident American dumb asses on here. It was the same under Trump; destroy perfectly good agreements that took huge efforts to create, pretend it's somehow good for the core supporters, and hope they aren't smart enough to actually notice that it isn't 95% of the time. International trade is one of the worst understood areas on this site. Trade by definition helps out both parties to some degree; when I saw people on here believing that attacking trade with Canada was a good thing ( because Trump said so ), it was getting absurd in the US. At the time, Canada ran a small trade deficit with the US ( not that trade deficits are necessarily a bad thing at all ).
I defy any US citizen or UK citizen to prove that all these trade moves helped out their country the last 4 years. What's the prize here to justify all the effort to destroy things ?