A presidential proclamation imposes new import measures on polysilicon and its derivatives, citing a Section 232 national security investigation by the Commerce Secretary. The document notes U.S. share of global polysilicon production capacity fell from 50 percent in 2005 to under 2 percent in 2024, while global production grew over 270 percent since 2020 with inventories hitting a record 400,000 tons.
The proclamation frames this as foreign governments strategically undermining American industry, citing polysilicon's role in semiconductors, solar panels, missile guidance systems, and AI hardware. It follows a prior proclamation on semiconductor imports from January 2026, suggesting a broader pattern of trade actions targeting the electronics supply chain.
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