We already have that. What Trump wants to do would actually simplify things from a user perspective (well, these days computers do it all so it doesn't matter). From an economic and consumer perspective, it's utter madness.
For instance, Bangladesh has something like 150% tariffs on apparel goods. Those don't really matter because nobody actually wants to export into Bangladesh. They don't have money. But now we would get 150% tariffs on Bangladeshi apparel. Prices of clothes will skyrocket. What will we get? Jack shit, because there's no American firm anywhere that exports substantial amounts of apparel to Bangladesh and no firm that wants to.
This is the stupidest possible way to do tariffs. I thought the Canada approach was the stupidest but again, I just don't have the imagination to keep up with these mooks.