The Trump administration is expected to unveil its grandest plan yet to rebuild supply chains of critical minerals needed for everything from jet engines to smartphones, likely through purchase agreements with partners on top of creating a $12 billion U.S. strategic reserve to help counter China's dominance. Vice President JD Vance is set to deliver a keynote address Wednesday at a meeting that Secretary of State Marco Rubio is hosting with officials from several dozen European, Asian and African nations. The U.S. is expected to sign deals on supply chain logistics, though details have not yet been revealed. Rubio met Tuesday with foreign ministers from South Korea and India to discuss critical minerals mining and processing.