USTR Federal Register notice requests public comments on plurilateral critical minerals trade agreement (adjacent impact for CMRT supply chains)

USTR published a Federal Register notice seeking public comments on a potential plurilateral agreement addressing trade in critical minerals. While this is not a CMRT template or SEC Form SD rule change, it is directly adjacent to conflict minerals/CMRT programs because it may affect critical minerals supply chain expectations, sourcing constraints, and due diligence evidence used across mineral supply chains. The notice includes a comment deadline of March 19, 2026.