President Trump Imposes Tariffs on Polysilicon to Strengthen National Security and U.S. Supply Chains

President Donald J. Trump signed a proclamation on August 6, 2026, to impose a minimum import price program and a 15% ad valorem tariff on polysilicon and its derivative products. This measure is intended to protect the American polysilicon industry, which is crucial for the semiconductor sector and national defense, and to encourage the onshoring of related industries.