Getting rid of the delusion of American exceptionalism in how politics is conducted. In other words, do something about the two party system, or the pardon power or any number of things, the possibilities are endless. But doing anything about it would require admitting that the USA is something other than perfect, so it’ll never happen. Too bad really.
At least the USA is only 4% of the world’s population so the world economy will just find other financial hubs and currencies, no big loss.