The U.S. Congress is intensifying scrutiny of cryptocurrency mining supply chains, with Senator Elizabeth Warren (D-MA) taking aim at Chinese mining hardware giant Bitmain and its financial ties to Eric Trump's American Bitcoin. On March 30, 2026, the Senate Banking Committee disclosed a letter sent by Warren to Commerce Secretary Howard Lutnick on March 26, seeking detailed information about the relationship between Bitmain—the dominant global producer of Bitcoin mining rigs—and American Bitcoin, a mining firm co-founded by Eric Trump.
Warren Sounds Alarm on Foreign Influence and Infrastructure Risks
In the letter, Warren asserted that Bitmain's strategy amid potential federal investigations has been to form "an alliance with one of President Donald Trump's children," specifically Eric Trump. She cited a recent interview in which American Bitcoin CEO Michael Ho, seated alongside Eric Trump, confirmed that Bitmain has been a "leading manufacturer" for the company. This partnership raises concerns about foreign access to U.S. power systems and the potential for remote manipulation of mining hardware.
The letter references prior federal action against Sophgo Technologies Ltd., a Bitmain affiliate blacklisted for supporting China's advanced semiconductor ambitions. Noting that Bitmain controls a large share of global ASIC production and has previous ties to Chinese state interests, Warren argued that the Commerce Department has authority to impose export controls and manage risks related to foreign-linked crypto infrastructure.
Unusual Financing: Hundreds of Millions in Rigs for Future Bitcoin
A central issue is the financial arrangement between Bitmain and American Bitcoin. Warren claimed Bitmain gave Eric Trump's firm "unusually generous" terms, exchanging mining equipment worth hundreds of millions of dollars for future Bitcoin payments rather than cash—a deal industry experts described as "strikingly favorable to American Bitcoin." The letter demands documents and responses by April 9, 2026, stressing that "national security decisions regarding export controls and U.S. trade rules must be insulated from improper political influence."
Industry defenders and Trump-aligned officials counter that concentrating hash rate within the U.S. strengthens national security, and that Bitmain's role as a leading supplier is commercially standard. American Bitcoin executives have dismissed claims that mining hardware could destabilize power grids, pointing to operational separation from critical infrastructure and demand-response mechanisms that allow facilities to reduce consumption during peak loads.
Eric Trump Reiterates $1 Million Bitcoin Prediction
Amid the controversy, Eric Trump doubled down on his bullish outlook. Speaking to CNBC on February 18, he said: "I have never been more bullish," reaffirming his prediction that Bitcoin will reach $1 million per coin. The Trump family's crypto ventures now sit at the intersection of a booming market and intensifying governmental oversight.