New U.S. tariffs on aluminum: A crackdown or just chaos?

The latest round of tariffs on aluminum and steel isn’t just about stopping direct imports, it’s about shutting down the backdoors that have let foreign metal, especially from China, slip into U.S. manufacturing through other countries. The new rules focus on where the metal was originally smelted and cast, not just where the final product was made. That’s a big deal, and it’s got serious implications for the auto industry, construction, aerospace, and beyond.

But here’s the problem, how do you actually prove where the metal came from?