We have had that in Argentina for 40 years. The result? One of the most expensive countries to live in the world. The PS5 you can buy for 500 dollars in USA? it is 1000 here in Argentina. The Samsung Galaxy you pay 800 in USA? It is 1600 in Argentina. The Levi jean you pay 100? It is 250 in Argentina. Or, if you want to pay the same price for a jean, you can, but the quality will be 1/3 of the one you can buy in USA/EU.
we are not talking about banning the import of regular products, but about donated or second hand items that are sold for next to nothing, half of which is useless junk. the point is to not allow these inferior imports to undercut local products, not to make any imports more expensive than local ones. the latter happens too, and it's stupid, but just because that is bad, and we should be allowed to sell our products, that doesn't mean that we should also be allowed to dump our junk that we don't want in those countries too.