Rare Earth Civil War: MP Materials Sues USA Rare Earth in Explosive Texas Court Fight

Highlights

• MP Materials filed suit in Texas Business Court against USA Rare Earth, executive Kevin Elkins, and FOM Technologies on May 22, seeking injunctive relief.
• The lawsuit pits two competing visions of American rare earth dominance against each other, revealing how thin the U.S. industrial bench truly is.
• MP Materials claims to operate the only fully integrated domestic rare earth magnet supply chain, spanning Mountain Pass mine to its Fort Worth magnet facility.
• The legal battle signals a new phase in the U.S. rare earth race marked by industrial combat, overlapping subsidies, and immature commercial structures.
• China's dominance spans the entire supply chain from mining to magnet manufacturing, while America is still attempting to rebuild its ecosystem from scratch.

America’s fragile rare earth supply chain just fractured publicly. MP Materials (opens in a new tab) — operator of the only scaled rare earth mine in the United States and an emerging integrated magnet manufacturing platform — has filed suit in Texas against USA Rare Earth (opens in a new tab), executive Kevin Elkins, and FOM Technologies (opens in a new tab). The lawsuit signals that the battle for America’s magnet future is no longer merely geopolitical. It is now commercial, legal, industrial, and deeply strategic. The rare earth war has officially come home to America.

The Lawsuit That Exposes America’s Rare Earth Fragility

Filed May 22 in Texas Business Court, MP Materials accuses USA Rare Earth, Kevin Elkins, and FOM Technologies of conduct serious enough to seek temporary and permanent injunctive relief. The opening language alone reveals the stakes.

In the filing, MP Materials describes itself as operating “the United States’ only fully integrated, domestic rare earth magnet supply chain,” citing both its Mountain Pass mine and Fort Worth magnet facility.

That language matters because it highlights a reality many policymakers still fail to grasp: America’s rare earth ecosystem remains astonishingly small, concentrated, and vulnerable. One lawsuit now threatens to expose just how thin the industrial bench really is.

More Than a Corporate Dispute

This is not simply a legal spat between mining companies. It is a collision between competing visions of who will dominate the emerging American magnet supply chain. MP Materials has positioned itself as the flagship vertically integrated U.S. rare earth champion, backed by government support, downstream magnet ambitions, and growing relationships with the Department of Defense and industrial buyers.

Meanwhile, USA Rare Earth has aggressively promoted its own Oklahoma and Texas magnet manufacturing ambitions tied to the Round Top project and domestic sintered magnet production.

Now the gloves are off — and in America, industrial rivalry increasingly runs through the courtroom.

The Real Story Investors Should Watch

The lawsuit underscores something REEx has warned repeatedly: the United States still lacks a mature rare earth industrial ecosystem. China does not merely control mines. It dominates separation, metallization, alloying, sintered magnet manufacturing, workforce expertise, equipment supply chains, and industrial scaling.

America, by contrast, is attempting to rebuild an entire ecosystem simultaneously — often with overlapping subsidies, competing narratives, immature commercial structures, and limited technical talent pools.

That creates enormous strategic tension.

REEx Take

Until additional filings emerge, investors should avoid drawing firm conclusions about the merits of the case itself.

But the broader signal is unmistakable. The U.S. rare earth race is entering a new phase: less PowerPoint, more litigation; less promotional rhetoric, more industrial combat. And beneath the courtroom drama sits a deeper truth few want to admit — America remains in the earliest innings of rebuilding a real magnet supply chain.