There's going to be two manufacturing bases for US companies. One for home and one abroad to sell to the world. If they just care about what they sell at home, no one in rest of the world is going to be buying their products at those prices. Because of Trump, this is what's going to happen. What they sell to the world will be even more important because of the added expensive cost from domestic production which means lower profit margins and they will need their foreign manufacturing base where higher profit margins there will off-set the costs at home. Then you have to think about when foreign sales make more money than at home, that US corporation might not be American anymore to avoid the whims of American politicians. The threat of whatever they see to their manufacturing is a result of domestic politics at home. If there's a threat to foreign supply, it's because of irresponsible domestic policies. There would no threat from China to deny the US rare earths if they weren't attacking China's economy first. What happens overseas hardly has threaten the supply chain. And then when all is said and done, it isn't the US that's coming out on top. Then when Americans have been proven wrong again when they see China hasn't collapse because they've denied Americans being in their presence and their economy doing well, their greed will want that taste of China again.
