You might be interested in this recent article from “Watts Up With That.”
WUWT is the Number One anti-global warming website in the world. Almost everyone who posts or comments there is a scientist, engineer, or mathematician.
Strategic Minerals - Our Next Energy And Security Crisis?
By Paul Driessen
https://wattsupwiththat.com/2018/02/26/strategic-minerals-our-next-energy-and-security-crisis/
I don’t believe the argument should be that we are dependent upon other minerals, therefore steel and aluminum are not important.
It’s well known the US needs to develop secure sources for DOZENS of strategic minerals. Ideally US, if not then North American.
But there are no more strategic materials for a world power than steel, aluminum, copper and oil. They are the bedrock of power and wealth.
If protection causes them to cost more, it’s worth it. If manufacturers think they should move to take advantage of cheaper materials costs, they should consider the cost of moving their finished goods into the US.
Because we won’t put up with that shit either.
And if the whole damn world has an issue with it, tough titties. They can sell their goods elsewhere.