"Trump has said the European Union...was formed 'in order to screw the United States.'"

Actually, the EU's origin institution, the European Coal and Steel Community, was formed to keep Germany and France from going to war again. And that was to advantage of the US.

https://www.dw.com/en/trump-says-he-will-slap-european-goods-with-25-tariff/a-71763765