Cryptocurrency think tank Coin Center filed a lawsuit against the U.S. Department of the Treasury’s Office of Foreign Assets Control (OFAC) in federal district court on Tornado Cash’s sanctions, alleging that OFAC’s sanctions on Tornado Cash exceeded statutory authority and that sanctions against Tornado Cash were imposed without statutory authority. and with regulatory authority. Coin Center also alleges that the Treasury Department failed to consider the collateral consequences of its actions when sanctioning the Tornado Cash tool. In August, the U.S. Treasury Department placed Tornado Cash on its sanctions list, barring U.S. citizens from using it.