The President of the United States announced, through a proclamation, adjustments to the import policy for polysilicon and its derivatives, in response to national security threats posed by foreign competition to the U.S. semiconductor and solar supply chains. The new measures include setting a minimum import price (MIP) for polysilicon and its derivatives, and imposing a 15% ad valorem tariff on downstream polysilicon derivatives. These actions aim to revitalize the U.S. polysilicon industry, ensure a secure and reliable supply of domestic semiconductor and solar products, and are complemented by a reshoring initiative to encourage domestic production. This follows an investigation by the U.S. Secretary of Commerce under Section 232 of the Trade Expansion Act of 1962, which determined that polysilicon imports threatened U.S. national security.