Senate Report Says $34.6M in USDT (USDT) Moved Before Iran Wallet Freezes

Senate Report Targets USDT in Iran Networks

Democratic staff of the US Senate Permanent Subcommittee on Investigations (PSI) released a preliminary report on September 28 that places Tether's USDT (USDT) at the center of Iran-linked sanctions evasion. The 28-page document, issued under Senator Richard Blumenthal, examined 846 cryptocurrency wallets that US or Israeli authorities had designated, blocked or seized over suspected Iranian ties — and found that 84% of them transacted almost exclusively in the dominant stablecoin. Of the 757 wallets the subcommittee tied specifically to Iranian terror financing, 87% relied primarily on USDT for spot trading, a preference staff analysts attribute to the token's high liquidity relative to rival stablecoins and its broad acceptance on crypto exchanges serving the Iranian market.

The report's sharpest finding concerns freeze latency. Israeli authorities designated 39 Hezbollah-linked wallets in June 2023, yet 34 of them were not frozen at the issuer until March 2024 — a window during which more than $34.6 million in USDT moved away from the flagged addresses. Staffers write that some wallets with publicly known links to sanctioned entities remained active even after designations were disclosed. Blumenthal transmitted the findings to Treasury Secretary Scott Bessent and Attorney General Todd Blanche, asking both departments to examine whether Tether breached sanctions and banking law. The document also scrutinizes the issuer's Washington relationships: Cantor Fitzgerald, custodian of Tether's reserves, was previously led by sitting Commerce Secretary Howard Lutnick, while Bo Hines — former executive director of the White House crypto council — now runs Tether US. The letter questions whether those ties could soften anti-money-laundering oversight. These remain preliminary staff findings rather than adjudicated violations; no court has ruled on any illegality. Our earlier walkthrough of the wallet data is in the Senate wallet probe.

Tether Counters With $550M Freeze Record

Tether issued its rebuttal the same day the report surfaced, September 28, saying it has worked throughout 2026 with the US government and law enforcement agencies to freeze approximately $550 million in USDT tied to Iran's central bank and its sanctions network. The company detailed two flagship actions: in April, acting alongside the Office of Foreign Assets Control (OFAC) and US law enforcement, it froze more than $344 million across two addresses; in July, after the Treasury Department widened designations on addresses connected to Iran's central bank, it froze over $130 million in four separate wallets. The statement did not itemize how the remainder of the $550 million total was frozen, nor did it directly address the report's core claim that designated wallets stayed movable for months.

As the issuer of a centralized stablecoin — a link already used above, so here we note the mechanism plainly — Tether can block transfers at the token-contract level, a capability the company frames as an enforcement asset rather than a liability. Chief Executive Paolo Ardoino argued that public blockchains hand investigators the ability to trace fund flows in real time and that Tether freezes balances once it receives credible law-enforcement information. The issuer says it now cooperates with more than 340 law enforcement agencies worldwide and has supported over 2,900 investigations, a record it positions as evidence of good-faith compliance. Enforcement pressure around Tether is nonetheless mounting: federal prosecutors recently sought $84.2 million from a firm linked to Tether's USDT, while the company has separately stated that under 0.034% of its reserve assets sit at seizure-hit EQIBank. Readers tracking the market in real time can follow live spot and futures prices on Bybit.

Freeze Speed Is the Compliance Test

COINOTAG's reading is that the two disclosures frame USDT's dual role with unusual clarity. The same centralized control that makes USDT enforceable for OFAC-style actions also creates the latency gap the subcommittee flagged — and the primary document, Blumenthal's 28-page letter with its annexed findings, itself states the review is preliminary and asserts no legal violation. The compliance question for Tether now shifts from capability to speed: whether freezes land within days of designation may become the metric on which the issuer's regulatory standing in the United States is judged.