To modify procurement requirements relating to rare earth elements and strategic and critical materials by contractors of the Department of Defense, and for other purposes.

This bill requires Department of Defense contractors to disclose detailed sourcing information for rare earth elements and strategic materials used in permanent magnets and advanced batteries. It expands existing disclosure rules to cover battery components, mandating contractors report where materials like lithium, nickel, cobalt, manganese, and graphite are mined, refined, and manufactured. The changes apply specifically to Defense contracts involving these critical materials, aiming to increase transparency in supply chains. This modifies Section 857 of the 2023 National Defense Authorization Act.