Republican senators Bill Cassidy and Cynthia Lummis introduced legislation on Monday that would ban U.S. crypto mining operations from using hardware linked to China and other foreign adversaries, while also writing President Donald Trump's Strategic Bitcoin (BTC) Reserve into federal law.
Cassidy-Lummis Mining Bill
The bill would force certified mining facilities to phase out equipment sourced from hostile nations.
It would also codify Trump's 2025 executive order that created a Strategic Bitcoin Reserve housed within the Treasury Department.
"Digital asset mining is a big part of our economy," Cassidy said. "This bill will secure supply chains, bolster US manufacturing, and support this industry."
Under the proposal, the National Institute of Standards and Technology and the Manufacturing Extension Partnership would assist domestic manufacturers in building secure, energy-efficient mining equipment.
The legislation reflects Trump's 2024 campaign promise to bring Bitcoin mining back to American soil, though recent tariff policies have complicated that effort because much of the required hardware still comes from China.
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Warren's Bitmain Probe
The Republican bill arrives days after Democratic Senator Elizabeth Warren asked the Commerce Department about national security risks tied to Chinese mining hardware.
Warren sent a letter Thursday to Commerce Secretary Howard Lutnick seeking documents about Bitmain Technologies Ltd., a Beijing-based firm that sells most of the world's Bitcoin mining rigs.
Bitmain has partnered with American Bitcoin Corp., a mining company that went public in September.
Eric Trump, the president's second-oldest son, co-founded the Miami-based firm and serves as its chief strategy officer.
Eric Trump's $548M Stake
American Bitcoin has said it plans to deploy thousands of Bitmain's Antminers to become the world's largest Bitcoin miner.
The company is also working with Bitmain to develop a massive data center in Texas.
Eric Trump values his stake in the firm at roughly $548 million. His brother Donald Trump Jr. also holds an investment of undisclosed size.
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