Invest4 publishers3 min readPublished
Israeli designations supply most of the wallets in a Senate report's 84% Tether finding
Senate Democratic staff found 84% of 846 Iran-linked sanctioned wallets moved almost only in Tether's USDT. Most came from Israel's list, and any penalty rests with a Treasury and Justice Department that Senator Blumenthal says have enforced nothing.
The Investor · Invest desk
What happened
- Two sanctioned Iranian oil smugglers moved more than $603 million in USDT from 2021 to 2025 through a network reaching Hizballah and the Houthis, the subcommittee found.
- Before 2024 Tether did not consistently freeze designated wallets, the report says, and in one case $34.6 million kept moving after designation.
- Blumenthal wrote to Treasury Secretary Scott Bessent and Attorney General Todd Blanche asking both departments to investigate Tether's sanctions compliance.
- Tether said the same day that actions involving USDT had frozen about $550 million in wallets US authorities linked to Iran's central bank in 2026.
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Why it matters
- constraint A US case against the issuer would lean on OFAC's designations, where about 58 wallets ran mostly on USDT, a much thinner base than the 84% headline.
- exposure For USDT holders the report adds legal and reputational risk at the issuer, with Iranian flows near 0.3% of supply and a reserve that exceeds liabilities by $4.1 billion.
- decision Bessent's Treasury has to decide whether to investigate a company holding about $141 billion of US Treasury exposure, whose 5% owner Cantor is controlled by the Commerce Secretary's children.
About 89% of the wallets in the sample were designated by Israel's counter-terror financing bureau, and roughly 659 of those traded predominantly in USDT [6][1]. OFAC's list contributes about 58 [2]. The two lists add up to 858 wallets, twelve more than the 846 total, so some wallets appear on both [3]. For anyone holding USDT, the smaller number is the one that counts, because the remedy Senator Richard Blumenthal wants has to come from US agencies [7].
The report can go a few ways. Treasury and the Justice Department could open the investigation he asked for. The document could stay what it is today, a product of the Democratic staff on a subcommittee where Blumenthal is ranking member [1]. Or Tether's own freezes could remain the main enforcement tool, which was the case the company made on publication day [12]. More than $474 million of its $550 million in Iran-linked 2026 freezes came in April and July [8]. It counts more than $4.9 billion frozen across all cases, working with over 340 agencies in 67 countries [12]. "Public blockchains provide authorities with a level of visibility into the movement of funds that simply does not exist with cash," Tether CEO Paolo Ardoino said [13]. The statement did not mention the subcommittee [12]. Tether confirmed receipt of the subcommittee's June letter on Iranian transactions but had not replied by the time the report came out [10].
The staff's sharper point is about obligation. Tether calls its OFAC compliance "voluntary" and says it follows OFAC "guidelines," wording the subcommittee set against the duties banks carry [6].
The report documents where tokens moved after issuance. For a holder, the counterparty question is the reserve, and measured against it the Iranian flows are small. The two smugglers' $603 million over five years is about 0.33% of USDT's $184.6 billion supply at June 30, and this year's freezes about 0.30% [4][5]. Reserves exceeded liabilities by roughly $4.1 billion in the latest quarterly results, when Tether booked $1.5 billion of net operating profit [17].
The political question runs through that same reserve. Tether held about $141 billion of direct and indirect US Treasury exposure at the end of March, the 17th-largest position globally [15], and Bessent's department is being asked to investigate the company [7]. Blumenthal points to Cantor Fitzgerald, which owns 5% of Tether and holds a large share of its assets. Commerce Secretary Howard Lutnick ran Cantor until recently, and his children now control it [8]. The report cites Bloomberg reporting that Tether lent those children money to buy out their father's stake [9]. The administration's oversight of crypto firms has "undermined our own national security interests," Blumenthal said [8].
I think the report changes little for a USDT holder this year. Blumenthal told CNBC that enforcement by Treasury and the Justice Department had been "none, zero" [11]. The agencies he wants to act sit in the same administration as Lutnick, whose children control the firm holding much of Tether's assets [8]. The counter-case is that the government is already building tools. FinCEN's May alert described Iran's use of stablecoins as including "minting and moving between large volume stablecoin issuers" [14]. On Sept. 14, Manhattan prosecutors sought forfeiture of about $61 million in crypto from Iranian oil sales. They alleged that two Chinese firms laundered it through Binance accounts, and Binance was not accused of wrongdoing [18]. I would change my view if OFAC's own designations start to look like Israel's, since those are the records a US case against the issuer would rest on [3].
What to watch
- Whether Bessent and Blanche answer Blumenthal's request, and whether either department opens a formal inquiry into Tether's sanctions compliance.
- Whether Tether replies to the subcommittee's June letter on its handling of Iranian transactions, and what it says about the pre-2024 freeze gap.
- The outcome of the Bloomberg-reported inquiry into whether Binance knowingly let users evade Iran sanctions, the nearest live test of how prosecutors treat venues handling Iranian crypto.