The U.S. government is spending billions of dollars to build rare earth processing plants on American soil, targeting what officials describe as the single biggest vulnerability in the country’s defense and clean energy supply chains. A series of federal investments, spanning the Department of Defense and the Department of Commerce, now back at least three separate companies working to mine, separate, and manufacture rare earth materials without relying on Chinese facilities. If these plants reach full operation, they would represent the first time in decades that the United States could process heavy rare earths and produce finished magnets domestically at meaningful scale.
Pentagon Backs MP Materials With $150 Million Loan
The Defense Department’s Office of Strategic Capital issued a $150 million loan to MP Materials to add heavy rare earth separation capabilities at the company’s Mountain Pass mine in California. The loan is the first issued through the Office of Strategic Capital and is tied to a broader agreement between the Pentagon and MP Materials reached in July 2025. The national security rationale is straightforward: heavy rare earths like dysprosium and terbium are essential for high-performance magnets used in guided missiles, jet engines, and satellite systems, and nearly all separation of these elements currently happens in China.
This is not the Pentagon’s first bet on MP Materials. The Defense Department previously awarded the company $35 million in grant funding to build U.S. heavy rare earth separation capacity, establishing a pattern of escalating federal commitment. The jump from $35 million to a $150 million loan signals that policymakers view early-stage results as promising enough to justify a much larger financial stake and a different financing tool. Mountain Pass already mines rare earth ore and produces concentrate, but the harder technical challenge has always been separation, the chemical process that isolates individual elements into usable form. That is the step China dominates, and it is the step the new loan is designed to fund.
Defense officials have framed the deal as an attempt to move beyond a fragile status quo in which U.S. weapons systems depend on materials that must be shipped to China for processing and then re-imported. By underwriting new separation circuits at Mountain Pass, the government is effectively paying to recreate industrial know-how that once existed in the United States but atrophied as Chinese producers undercut global prices. The Office of Strategic Capital structure also reflects a shift toward using loans and other financial tools, rather than only grants, to pull private capital into defense-relevant industrial projects.
Commerce Department Puts $1.5 Billion Behind USA Rare Earth
While the Pentagon focuses on separation, the Commerce Department is funding something even more ambitious: a complete domestic supply chain from raw ore to finished magnets. The department’s CHIPS Program issued a letter of intent to USA Rare Earth proposing up to $277 million in direct support and up to $1.3 billion in a senior secured loan under the CHIPS and Science Act. The prospective financing targets what the company calls its “mine-to-magnet” strategy, which aims to produce neodymium-iron-boron (NdFeB) magnets entirely within the United States.
NdFeB magnets are the strongest permanent magnets commercially available, and they power electric vehicle motors, wind turbine generators, industrial robots, and a wide range of defense applications. The fact that the Commerce Department is using CHIPS Act authority, originally designed for semiconductor manufacturing, to fund rare earth magnet production reflects how broadly the government now defines “critical technology” and how closely it links clean energy hardware to national security. The letter of intent does not guarantee final funding, but it represents a serious federal commitment to a single company’s vertical integration plan, contingent on due diligence and final agreements.
USA Rare Earth has also secured substantial private capital to match potential federal backing. The company announced it had raised $1.5 billion from private investors alongside the government letter of intent, which itself provides access to up to $1.6 billion in public financing. That combination of public and private money, exceeding $3 billion, makes the USA Rare Earth project one of the largest single investments in domestic critical mineral processing in recent memory. Company materials describe plans for a U.S. mine, a separation facility, and a magnet manufacturing plant designed to supply both civilian and defense customers.
Commerce officials have emphasized that the proposed loan structure is meant to crowd in private capital rather than replace it. The CHIPS Program’s letter of intent points to a model where federal money de-risks the most capital-intensive pieces of the supply chain, such as separation plants and magnet lines, while equity investors finance the broader corporate build-out. For USA Rare Earth, that approach could help bridge the gap between a technically feasible project and one that banks and institutional investors view as financeable at scale.
Lynas Brings Allied Supply Into the Mix
The third leg of the emerging strategy involves Australia’s Lynas Rare Earths, the largest rare earth producer outside China. The Defense Department signed a Defense Production Act agreement with Lynas to establish domestic light rare earth processing capabilities in Texas. The agreement was explicitly framed as building U.S. separation capacity outside China’s control, while also deepening industrial cooperation with a close ally.
Under the arrangement, Lynas plans to ship concentrate produced at its mines to a new facility in the United States, where it will be processed into separated light rare earth oxides. These oxides are key inputs for catalysts, electronics, and magnet alloys. By anchoring the project with DPA Title III funding, the Pentagon is effectively guaranteeing a baseline of demand and support that can justify Lynas’s decision to build on U.S. soil instead of expanding only in Australia or Southeast Asia.
Lynas has highlighted its U.S. expansion in investor presentations, including
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*This article was researched with the help of AI, with human editors creating the final content.
