I just learned that he apparently want to impose a new economic order on the world where every country basically becomes subservient to the US, but first they need crazy tariffs to make them all beg for access to the US market. I don't think it will work, and instead the global economy will move on without the US.
This sounds like some kind of right-wing conspiracy theory attributing everything to George Soros for some reason.
The US dollar is the reserve currency of the world. America has been calling the shots for the entire post-WWII period. The American Empire extends across the globe collecting natural resources and cheap labour. US citizens have been reaping the benefits of this neo-imperialism. What MAGA people are advocating is basically US isolationism where the US surrenders all it's soft-power influence and becomes a sort of hermit oligarchy.