Thai businessmen sue Tether over $42.4M pre-warrant USDT freeze

Two Thai businessmen sued Tether in the Southern District of New York over a $42.4 million USDT freeze, alleging the issuer blacklisted their wallets on an informal US agency request without a warrant or court order.

"Nutthawat Rukthammachalern and Natthawat Kasamvilas say Tether blacklisted their wallets on October 30, 2025, after an informal request from an HSI agent," Ariel Givner, the attorney who detailed the complaint, said.

A seizure warrant was only issued by the Eastern District of North Carolina in February 2026, directing the burn and reissue of the tokens to a government wallet. The funds are allegedly tied to a $61 million "pig butchering" laundering case. The plaintiffs do not dispute the underlying criminal allegations but challenge Tether's authority to freeze assets without prior court orders.

The case raises questions about whether a seizure warrant authorizes a stablecoin issuer to burn and reissue tokens, and could set a legal precedent for when issuers may freeze assets relative to law enforcement warrant timelines.

The complaint centers on the distinction between a voluntary freeze and a court-ordered seizure. Tether, issuer of the world's largest stablecoin by market capitalization, maintains a blacklist mechanism that prevents wallets from transacting. The plaintiffs argue that deploying this mechanism based on an informal law enforcement request — before any judicial authorization existed — exceeded the issuer's authority under its terms of service and applicable law.

The February 2026 warrant from the Eastern District of North Carolina added another layer of legal complexity. While the warrant authorized seizure of the funds, the plaintiffs contend it did not necessarily authorize Tether to burn the tokens and reissue them to a government-controlled wallet — an operational step that effectively transfers value from token holders to the state.

The case arrives as stablecoin issuers face growing scrutiny over their compliance frameworks. Circle, which issues USDC, and other major issuers maintain similar freeze and blacklist capabilities, raising questions about whether voluntary cooperation with law enforcement creates legal exposure when judicial oversight lags behind operational action.

For Tether, the lawsuit adds to a growing list of legal challenges. The company has previously faced litigation from Celsius over a $3.5 billion claim and has defended its reserve practices against various allegations. This case, however, targets a different vulnerability: the procedural legitimacy of its freeze operations.

The outcome could influence how stablecoin issuers handle informal government requests. If the court finds Tether acted improperly by freezing assets before a warrant was obtained, issuers may require judicial authorization before blacklisting wallets, potentially slowing law enforcement cooperation. If the court sides with Tether, issuers gain clearer cover for acting on informal agency requests.

A ruling in either direction would establish a benchmark for the stablecoin industry, which has operated with significant discretion in freezing assets linked to alleged criminal activity. The case is in its early stages, with no hearing date yet set in the SDNY.

This article is for informational purposes only and does not constitute investment advice.