U.S. Congressman Zach Nunn has raised concerns about Chinese investors attempting to acquire stakes in American Bitcoin mining companies, potentially threatening the U.S.'s strategic position in digital assets. Speaking at the Bitcoin 2026 conference, Nunn emphasized the need for legislation to protect U.S. dominance in Bitcoin mining and digital asset infrastructure. Previously, Nunn urged the U.S. Treasury and CFIUS to review Chinese-linked Bitcoin mining firms like Bitmain and Cango, citing national security risks.