@Tharg I think its easier to count the Countries the USA hasn’t interfered in! Perhaps some on this Forum are afflicted by that well known malaise ” blinded by the right” where having spent so much time on right wing websites they become oblivious to anything other than propaganda.
Trump entertained virtually all of the leading Brexiteers and spoke in glowing terms of his support for the cause. Theres no doubt that American money has gone into various right wing groups including neo Fascists. Trump in particular viewed the EU as an economic foe and went about degrading relationships with former EU allies.