Honestly, other nations will end up selling and getting better to other nations, whereas USA will end up staying behind, because if others can't sell to USA, you think they will just keep getting American products?
If Hyundai can't sell to USA, you think Ford could sell to them? Of course not, and that would cause so much problems. And this is terrible for small business but even worse for big ones. Think of it, 100 million dollars spent by some big company to get something, could become 150 million with new tariffs, how are they not going to make the product sold for more? They will. Apple for example is the biggest one and that should be giving you enough example that none of these will mean anything in the end.
True this whole trade tariffs is an indication that the America economy is afraid of competing with other economies in terms of trade which to me has to do with the quality of their export to others nations if the America economy is not truly afraid of competitors it will not go this way.
China is a good example of this China penetrations to other markets is as a result of how they exposed their economy to completion with other economies which made them to realize the areas that they are lacking while improving their products quality so one way that will help any economy grow is competitive environment