U.S. Senators Elizabeth Warren and Angus King have raised concerns over potential national security threats posed by cryptocurrency miners in Iran. In a letter to top U.S. officials, they requested information on possible ties between the Iranian government and local crypto miners, and how digital assets might be used to bypass U.S. sanctions. They claim Iran has used crypto mining funds to support terrorist organizations and recent attacks on Israel. The Senators are seeking data on the revenue of Iranian crypto miners, its potential use for money laundering, and its threat to U.S. national security.