We are strengthening the American manufacturing industry....and we need to.
If foe some reason the USA gets in a war (cold or hot).with China or Russia, domestic steel and aluminum is going to be essential....
Most electricity is transmitted by aluminum wrapped steel cable....that's what is on every power pole in America. Electric transformers on every power pole also are made of aluminum. Every airplane is made of aluminum. We even have aluminum block engines in vehicles.
There's no reason why we should not be producing our own aluminum.
If we recycle aluminum, the price per pound goes up due to decreased shipping for the scrap metal. Making recycling more affordable than ever.
Copper smelters also need to be brought back. That way Copper and brass and bronze can become affordable again....which relates instantly to our increased ship building once again. We need to be able to produce ships like we used to. Fishing, cargo, tankers, and pleasure boats. All are needed again. Our fleets are aging but we can't build new ones due to cheap imported metals.