The United States once had a meaningful position in the rare earth supply chain, but that advantage was gradually surrendered. According to Ars Technica, the deciding factor was cost: for decades, cheaper imports from China made domestic processing uneconomical, so US companies and policymakers simply let the capability fade.
That choice left the country dependent on China for the crucial step of turning raw rare earth minerals into usable materials. The source notes that China took full advantage of this opening, building dominance in the processing stage that matters most for modern electronics, magnets, and defense systems.
The article does not present a quick fix, but it underscores the strategic cost of prioritizing short-term savings over supply chain resilience. The lesson is that a processing gap, once created, is hard to reverse—and the dependence is now a structural weakness rather than a simple trade preference.