US sets price floors and tariffs on polysilicon, sharpening tech decoupling from China

<p class="P1" data-sourcepos="5:1-5:338;126-463">US President Donald Trump said imports of polysilicon and related products threaten national security and ordered new trade measures aimed at lifting domestic production. The proclamation reflects a broader effort to reduce the US's reliance on foreign supply for solar manufacturing, semiconductors, and other advanced technologies.