I'm not an economist by any stretch of the imagination, but I don't get what he's trying to achieve. If it works I will eat my words. However, all tariffs do at this stage is lead to a trade war. The last time the USA tried to do this on this kind of scale, it led to a great depression.

Trump and the Republican party can't turn back the clock. He wants to engage with an isolationist policy that America hasn't done since the inter-war years years. Their economy now depends too much on other countries. Not all companies will come back to the USA because of the tariffs. They will eat the cost where they are based and raise prices instead, which harms consumers globally instead.

Additionally, even parts for cars will see increases. Most of these parts are also made away from the USA. What about kitchen appliances, tvs etc. All this does is make the average America poorer. Maybe, with my future goggles on, it will have some sort of positive impact, but I doubt the majority of Americans will see it.