Polysilicon and Apple’s US Manufacturing Push: Reshaping America’s Tech and Defense Landscape
In a significant development for United States national security and economic resilience, the Secretary has determined that polysilicon is essential to the national security and economy of the United States. This finding underscores the critical role of polysilicon in both defense and renewable energy sectors. Semiconductors, which rely on polysilicon, are vital inputs for U.S. defense systems including radar and communication systems, electronic warfare and cybersecurity systems, and guidance and control systems for missiles and drones. Additionally, polysilicon is indispensable for the production of solar products, further highlighting its strategic importance.
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The polysilicon industry has undergone a dramatic shift. While semiconductor-grade polysilicon was once the primary output, it now accounts for only 2% of global semiconductor-grade polysilicon production. This decline raises concerns about supply chain vulnerabilities. To address these, the President is authorized under section 604 to modify the Harmonized Tariff Schedule of the United States (HTSUS), including the removal, modification, continuance, or imposition of any rate of duty or other import restriction. Distributors should note that cash deposits remain provisional until liquidation and may differ from final assessed duties. Suppliers in four countries remain subject to these trade measures, and related coverage includes the R-32 antidumping sunset review, critical minerals, and current U.S. regulatory news.
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In parallel, Apple has made a landmark announcement: Mac mini assembly work is moving to US soil as part of the company’s most significant chip upgrade in years. Announced in February 2026, this move is part of Apple’s accelerated American Manufacturing Program. Notably, Apple’s chip supply commitments in the US are now larger than any prior American Manufacturing Program deal. This shift not only boosts domestic production but also aligns with broader efforts to secure critical technology supply chains.
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These developments signal a renewed focus on domestic manufacturing and supply chain security. The intersection of polysilicon’s defense applications and Apple’s manufacturing investments highlights a strategic realignment toward self-reliance in key technologies. As global trade dynamics evolve, such measures will be crucial in safeguarding U.S. economic and national security interests.</
Shimanta Das 
