[U.S. Senator Investigates Relationship Between Cantor and Tether, Requests Explanation of Sanctions Compliance Measures] According to CoinDesk, Richard Blumenthal, the lead Democratic member of the U.S. Senate Permanent Subcommittee on Investigations, sent a letter on October 8 local time to Cantor Fitzgerald CEO Brandon Lutnick (son of U.S. Secretary of Commerce Howard Lutnick), investigating the relationship between Cantor and stablecoin issuer Tether.