Cassidy and Lummis drop Mined in America Act to wean U.S. miners off Chinese hardware and cement Trump's strategic Bitcoin reserve

Bitmain already controls ~82% of ASIC production and announced a US assembly line for 2026 — tariff pressure is doing the heavy lifting here before this bill even hits committee. The gap nobody's addressing: "domestic manufacturing" of mining hardware still routes through TSMC for chip fab, so you can assemble Antminers in Texas all day but the silicon bottleneck sits in Hsinchu, not Shenzhen. 37% of global hashrate running on hardware designed by three Chinese companies is a strange foundation for a "strategic reserve" — voluntary certification with no phase-out timeline is a press release, not a supply chain strategy.

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