Simply speaking it won't cut down aluminum export from Canada Its a new way to collect more tax from American consumers.

Rump thinks someone is going to push a button and all these factories will suddenly appear and start production in one day. Just like he can stop inflation in one day.There are no plans for new aluminum or steel plants, or oil refineries in the USA. What company wants to invest a billion USD in a plant in these unsure times with America very very close to being a fascist state. You can Drill baby drill, and mine all the steel you want, but with not new plants and refineries built. it just sits there. Steel companies will never do that. An oil refinery can take 10 to 20 years to build and a steel plant can take 5 to 10 years to build... depending on the infrastructure, and permits needed etc. Of course trump knows none of this, and how all this will affect Exports, which made America great. All he knows is he will have trillions of usd he can spend or give away as he wishes.. That money is YOUR money you paid on each item you buy. This is how the Great Depression happened, and ultimately WW2