Gate News reports that on March 28, U.S. Senator Elizabeth Warren sent a letter to Secretary of Commerce Howard Lutnick, requesting information on potential national security risks associated with Bitmain, while also focusing on its business dealings with the Trump family. The letter calls for the disclosure of communication records between Bitmain and Eric Trump and Donald Trump Jr. According to reports, the FBI is conducting an investigation called “Operation Red Sun” to assess whether there are risks of the related mining equipment being remotely controlled. Previously, U.S. regulators had repeatedly raised concerns about the safety of Bitmain’s products. In response, Bitmain stated that the related allegations are untrue, and American Bitcoin Corp indicated that its safety tests found no issues.