Tether faces $42.4M USDT freeze lawsuit

Tether is facing a new legal test over how far a stablecoin issuer can go when law enforcement asks it to freeze tokens. Two Thai businessmen sued the company in the U.S. District Court for the Southern District of New York on August 31, saying Tether blocked about $42.4 million of USDT in their wallets before any U.S. court had issued a seizure warrant. (coindesk.com) The lawsuit centers on 10 Ethereum addresses that the plaintiffs say held exactly 42,417,785.62 USDT. (coindesk.com) The complaint, as described in multiple reports published on September 2, says Tether blacklisted those addresses on October 30, 2025 after what plaintiffs describe as an informal request tied to Homeland Security Investigations. (finance.yahoo.com) ### Who sued Tether, and what are they alleging? Nutthawat Rukthammachalern and Natthawat Kasamvilas are identified in the reporting as the plaintiffs. They argue Tether froze their USDT without legal authority because the freeze came before a judicial seizure order existed. The plaintiffs also say they obtained the tokens through secondary-market business transactions rather than directly from Tether. (coindesk.com) That point matters to their legal theory because they argue Tether’s technical control over the smart contract does not automatically give it the right to restrict tokens held by third parties. ### What is the timeline at the center of the case? October 30, 2025 is the key date in the complaint. (coindesk.com) The plaintiffs say that is when Tether blacklisted the wallets holding the disputed USDT. February 2026 is the second date that appears repeatedly in reports on the case. The plaintiffs say a U.S. seizure warrant arrived only months later, and they are using that gap to argue the original freeze was premature. (coinalertnews.com) ### Why does the freeze itself matter so much? Tether’s blacklist function can stop specific wallet addresses from moving USDT. Reports on the complaint also say another function, described as `destroyBlackFunds`, can burn blacklisted tokens. (cryptonews.net) That is why the suit is not only about whether the wallets were frozen. The plaintiffs are also asking the court to prevent the tokens from being destroyed and to order their return, with damages if the funds are burned or otherwise made unavailable. (coinalertnews.com) ### Was this tied to a broader fraud investigation? More than $61 million in USDT was separately traced by prosecutors to wallets linked to alleged investment-fraud schemes, according to reporting on the case. (coindesk.com) The plaintiffs, however, are challenging Tether’s authority to act when it did, rather than only disputing the government’s tracing allegations. The complaint therefore appears to put a narrower question before the court: whether a private stablecoin issuer may freeze secondary-market tokens after an informal law-enforcement request and before receiving judicial authorization. (cryptonews.net) That framing is drawn from reports summarizing the filing. (blockonomi.com) ### What else was moving in crypto markets on September 2? An X post cited in the source briefings said Total Crypto AI market capitalization was down about 2% on September 2 amid reported U.S.-Iran tensions and oil trading above $90 per barrel. A separate social post also referenced the Tether lawsuit alongside broader crypto volatility. (blockonomi.com) Those market moves are separate from the lawsuit, but they help explain why the case surfaced in trading-focused social feeds on the same day. The court fight itself was filed in the Southern District of New York on August 31 and was picked up by crypto media on September 2. (coindesk.com) ### What happens next in court? The Southern District of New York is the venue to watch. The plaintiffs are seeking removal of the blacklist, return of the USDT, and damages if the tokens are destroyed, according to reports summarizing the complaint. PACER says federal case records can be tracked through the court’s electronic docket system, and the next step will be any response from Tether or additional filings in the New York case. (financefeeds.com) (pacer.uscourts.gov) (blockonomi.com) (finance.yahoo.com)