Joining the WTO and the IMF was no mistake when our country was economically dominant and could use these agencies to strong arm weaker economies into complying with U.S commercial interests.
Unfortunately, there are now several economies(EU, China, Japan...etc) of comparable scale, and they want to use these agencies to further their own interests.
“of comparable scale, and they want to use these agencies to further their own interests.”
Which is what leaders of countries are supposed to do.