The only leverage countries have against the US is exporting something that the US wants. Rare earths, electronics, cars, etc.
If they are blackmailed via tariffs to build factories in the US so that the US becomes self-sufficient, there is no leverage at all. So don't build these factories.
If they are blackmailed via tariffs to build factories in the US so that the US becomes self-sufficient, there is no leverage at all. So don't build these factories.