In November last year, the Office of Foreign Assets Control (OFAC) added Tornado Cash to its "Specially Designated Nationals or Blocked Persons" list. Coin Center subsequently filed a lawsuit against Treasury Secretary Janet Yellen over the sanctions, but the lawsuit has since been dismissed. Coin Center argued in the lawsuit that the addresses associated with the non-upgradable smart contract that constitutes Tornado Cash were not appropriate targets for sanctions. Neeraj Agrawal, Coin Center's head of communications, stated on X platform that the company intends to appeal this decision.