U.S. Rare Earth and Critical Minerals Stocks Plunge Amid White House Tariff Plans

US-listed rare earth and critical minerals stocks plunged on Wednesday after the Trump administration proposed a new trading bloc with tariffs to enforce price floors, rattling investors. The proposal aims to shield Western producers from China's oversupply and price undercutting. Shares of companies like MP Materials Corp and USA Rare Earth fell sharply despite recent policy moves to support domestic supply, including a $10 billion loan commitment for Project Vault.