Stablecoin issuer Tether has frozen approximately $4.2 billion in USDT due to connections with illegal activities, with $3.5 billion of this amount frozen since 2023. This week, Tether assisted the U.S. Department of Justice in freezing around $61 million related to a 'pig butchering' scam. Tether's USDT circulation now exceeds $180 billion. The company can remotely freeze tokens in user wallets upon law enforcement requests.