America holds roughly 38% of global Bitcoin mining capacity, and the specialized hardware powering that position comes overwhelmingly from Chinese manufacturers.Senators Bill Cassidy and Cynthia Lummis introduced the Mined in America Act on Mar. 30 to address that gap, proposing certification, domestic manufacturing support, and the codification of President Donald Trump's Strategic Bitcoin Reserve to begin unwinding a foreign hardware dependence they frame as a national industrial vulnerability.Cassidy's office cites 97% of mining hardware coming from China. Hashrate Index's January 2026 update places US Bitcoin mining capacity at roughly...