Tether froze over $180 million worth of USDT in five Tron wallets within a single day, marking one of the largest enforcement actions on the network. This freeze was likely coordinated with US authorities, highlighting the issuer's centralized control maintained through smart contract keys to ensure compliance with legal requirements. Since 2023, Tether has frozen over $3 billion from more than 7,000 addresses, far surpassing other stablecoin issuers. Chainalysis data shows that stablecoins currently account for the majority of illegal cryptocurrency activity, underscoring their significant role at the intersection of regulation and decentralized finance.