8 years ago I took a guided tour of Intalco in Bellingham, WA. By their briefings, it was one of only 4 full time aluminum smelting facilities left in the USA.
It has since closed down.
Perhaps we should have our own aluminum production here before we nuke the incoming supply from abroad. China is a major exporter in part because the bauxite is processed in Australia, closer to them. Without our own production capacity, nor the ability to get it up and online for years, the tariff does nothing for security, but it does fill the treasury coffers for future raiding..., by Trump's oligarchy.