The long and short is that the US has run a trade deficit because it deficit prints which gives money to bankarinos which passes it on to random africans and women who use their credit cards to wrack up 50000 dollars in debt while crying they have no savings besides their 401k or whatever and another loan on their house and car.
Basically Richard Nixon bought chinese friendship in the 1970s to fuck the soviets up and used excess chink labor as a handicap for the US which couldn't compete with the Warsaw Pact (which functioned more like a communist federation than a simple alliance like Nato, Poland couldn't tell Russia to fuck off the same way France did to the US, we didn't own western europe we merely asked them to stop being commie fags).
So this entire system is a relic of the cold war, which boomers profited off of at the expense of their gen x/gen y kids and their zoomer/gen alpha grandkids and now Trump is saying basically "hey so we're changing the system so people under the age of 50 don't literally starve to death in 20 years when boomer capital no longer props up the government".
The result is that a lot of economies developed around exporting shit to the US , which aree supposed to be our bitches, got big heads about themselves. But export-based economies like germany and france don't have the leverage to dab on the import-focused US.