Highlights

  • Senator Cynthia Lummis says a lawsuit over Tether's $42.4 million USDT freeze exposes a legal gap in fighting illicit crypto finance.
  • The lawsuit, filed in the Southern District of New York, alleges Tether froze the funds three months before a seizure warrant was issued.
  • Tether reportedly acted on an informal Homeland Security Investigations request in October 2025, before a federal magistrate signed a warrant in February 2026.
  • Lummis points to Section 305 of the CLARITY Act, which would let issuers and exchanges freeze suspected illicit funds without civil-liability exposure.
  • The funds are linked to a wider Justice Department probe into more than $61 million in USDT tied to pig-butchering scams.

Senator Cynthia Lummis weighed in Thursday on a lawsuit accusing Tether of unlawfully freezing $42.4 million in USDT, arguing the case exposes a dangerous gap in how the law handles efforts to fight illicit finance in crypto. The lawsuit, filed in the U.S. District Court for the Southern District of New York, was brought by two plaintiffs who say Tether blacklisted their addresses without proper legal authority. According to court filings, Tether froze the funds after an informal request from a Homeland Security Investigations agent in October 2025, months before a federal magistrate in North Carolina signed a formal seizure warrant in February 2026.

A Freeze That Came Before the Warrant

CoinDesk reported that the lawsuit, filed by Nutthawat Rukthammachalern and Natthawat Kasamvilas against four Tether entities, centers on the roughly three-month gap between when Tether acted on the informal law-enforcement request and when a court actually authorized the seizure.

The plaintiffs argue that acting on an unofficial request, without a warrant, court order, or notice to account holders, exceeded Tether's legal authority and caused them direct financial harm during the period their funds sat frozen without judicial sign-off. The case sits within a broader Justice Department investigation into more than $61 million in USDT that prosecutors allege was stolen through so-called pig-butchering scams, a category of fraud in which victims are gradually manipulated into moving funds into fraudulent crypto investments. Whether the frozen $42.4 million is itself proceeds of that scheme, or was mistakenly caught up in an overly broad blacklisting action, is a central question the litigation will need to resolve.

Related: CLARITY Act's Fate Hangs on Ethics Fight as Crypto PAC Attacks Banks

Why Lummis Is Tying the Case to CLARITY

Lummis argues the underlying problem is structural rather than specific to this case: stablecoin issuers and exchanges currently have no clear legal shield for freezing suspected illicit funds quickly, leaving them exposed to lawsuits like this one regardless of whether they act on a formal warrant or an informal law-enforcement request. She points to Section 305 of the CLARITY Act, which would grant issuers and exchanges explicit authority to halt suspected illicit financial activity without facing civil liability for doing so. The CLARITY Act itself faces a critical Senate vote on September 15, and the Tether lawsuit gives supporters of the bill a concrete, high-profile example to cite as evidence that current law leaves issuers in an impossible position, caught between demands from law enforcement to act fast and the risk of being sued for acting without a court order. The CFTC has separately warned it will write its own crypto rules if the legislation stalls, adding further pressure on lawmakers to resolve exactly the kind of legal ambiguity this lawsuit has exposed.

What Happens Next

The immediate marker to watch is the CLARITY Act's September 15 Senate vote, where Section 305's liability protections for issuers and exchanges will be part of the broader package lawmakers are weighing. If the lawsuit against Tether proceeds and a court finds the company acted improperly by freezing funds on an informal request, it could strengthen the argument for exactly the kind of statutory protection Lummis is pushing, since issuers would otherwise face a choice between ignoring law-enforcement requests or risking litigation every time they cooperate quickly. A ruling against Tether, or a settlement that avoids one, would both likely become reference points in the ongoing debate over how much legal cover stablecoin issuers should receive when law enforcement comes calling before the paperwork catches up.

FAQ

What is the lawsuit against Tether about?
Two plaintiffs allege Tether froze $42.4 million in USDT based on an informal Homeland Security Investigations request in October 2025, three months before a federal magistrate signed a formal seizure warrant in February 2026.

What did Cynthia Lummis say about the case?
She said the lawsuit exposes a dangerous legal gap, arguing issuers and exchanges currently cannot freeze suspected illicit funds without risking civil liability.

What does Section 305 of the CLARITY Act do?
It would grant stablecoin issuers and exchanges explicit authority to halt suspected illicit financial activity without facing civil liability for doing so.

Is the frozen $42.4 million linked to a broader investigation?
Yes. The case sits within a wider Justice Department probe into more than $61 million in USDT allegedly tied to pig-butchering scams.