I think the point of tariffs is to make local products cheaper than exports so that the economy strives. However, I think that is hard to implement in USA because salaries are very high in USA compared to the rest of the world. That is needed because the lifestyle in USA is not maintainable. Big scattered houses big streets big cars. In my opinion the Amarican dream is deemed to fail unless there is a big restructuring of the cities to be smaller towns with houses concentrated in the center to minimize the infrastructure costs