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.
Why it matters
- What it limits 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.
- Who's exposed 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.
- Who has to decide 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.
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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 [25][20]. OFAC's list contributes about 58 [21]. The two lists add up to 858 wallets, twelve more than the 846 total, so some wallets appear on both [22]. 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 [4].
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 [2]. More than $474 million of its $550 million in Iran-linked 2026 freezes came in April and July [12]. It counts more than $4.9 billion frozen across all cases, working with over 340 agencies in 67 countries [2]. "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 [6]. The statement did not mention the subcommittee [2]. Tether confirmed receipt of the subcommittee's June letter on Iranian transactions but had not replied by the time the report came out [15].
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 [14].
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% [23][24]. Reserves exceeded liabilities by roughly $4.1 billion in the latest quarterly results, when Tether booked $1.5 billion of net operating profit [19].
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 [17], and Bessent's department is being asked to investigate the company [4]. 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 [9]. The report cites Bloomberg reporting that Tether lent those children money to buy out their father's stake [10]. The administration's oversight of crypto firms has "undermined our own national security interests," Blumenthal said [9].
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 [9]. 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" [16]. 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 [13]. 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 [8].
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.
Information, not investment advice. This story is general information about companies and markets, drawn from cited reporting. It is not a recommendation to buy, sell or hold any security; check the cited sources before acting.
Clarity's read
What the record supports and how the coverage leans. The claims behind it follow.
Reality
- Evidence60
- Adoption75
- Hype gap+30
- Incentives72
- Confidence62
Perspective Coverage
8 publishers- Builder
- Builder 17%
- Operator
- Operator 41%
- Investor
- Investor 42%
Claim ledger
Ranked by verification strength, evidence, and original report placement.
- [1]
Democratic staff on the Senate Permanent Subcommittee on Investigations, where Richard Blumenthal is ranking member, analyzed 846 wallets sanctioned or targeted for seizure over links to Iran and its proxies and found 84% transacted exclusively or nearly exclusively in Tether's USDT; the report is titled "Tethered to Terrorism."
- [2]
Tether said the same day that actions involving USDT had frozen roughly $550 million across wallets U.S. authorities linked to Iran's central bank during 2026, including more than $344 million in April and over $130 million in July, and more than $4.9 billion across all cases with over 340 agencies in 67 countries; the statement did not mention the subcommittee or its findings.
- [3]
Before 2024 Tether did not "comprehensively and consistently freeze" wallets designated by counter-terrorism agencies, and in one case $34.6 million continued to move through sanctioned wallets after designation.
- [4]
Blumenthal wrote to Treasury Secretary Scott Bessent and Attorney General Todd Blanche asking both departments to investigate Tether's anti-money laundering and sanctions compliance.
- [5]
Two sanctioned Iranian oil smugglers, Alireza Derakhshan and Arash Estaki Alivand, moved more than $603 million in USDT between 2021 and 2025 through a network that reached Hizballah, the Houthis and Iranian financial institutions.
- [6]
"Public blockchains provide authorities with a level of visibility into the movement of funds that simply does not exist with cash," said Tether CEO Paolo Ardoino.
- [7]
The report draws on blockchain records for wallets designated by Treasury's OFAC and Israel's National Bureau for Counter Terror Financing between June 2021 and August 2026.
- [8]
87% of the 757 wallets designated by the Israeli bureau transacted predominantly in USDT, against 57% of the 101 designated by OFAC.
- [9]
Blumenthal argues the administration's oversight of crypto firms has "undermined our own national security interests," and points to Cantor Fitzgerald, which owns 5% of Tether and holds a large share of its assets, run until recently by Commerce Secretary Howard Lutnick and now controlled by his children.
- [10]
The report cites Bloomberg reporting from March that Tether lent Lutnick's children money to buy out their father's stake when he divested on nomination.
- [11]
Blumenthal told CNBC's Squawk Box the stablecoin was "not just a path, it's a superhighway," and said enforcement by Treasury and the Justice Department had been "none, zero."
- [12]
More than $474 million of the $550 million in 2026 Iran-linked freezes came in April and July.
- [13]
On Sept. 14 federal prosecutors in Manhattan sought forfeiture of about $61 million in crypto from sales of sanctioned Iranian oil meant to fund the IRGC, alleging two Chinese firms laundered the money through Binance accounts; Binance was not accused of wrongdoing and the allegations are unproven.
- [14]
Tether has described its compliance with OFAC sanctions as "voluntary" and says it follows OFAC "guidelines," a framing the subcommittee contrasts with the obligations on banks.
- [15]
The subcommittee wrote to Tether in June seeking information on its handling of Iranian transactions; the company confirmed receipt but had not replied by publication.
- [16]
In May FinCEN issued an alert describing Iran's use of stablecoins as including "minting and moving between large volume stablecoin issuers."
- [17]
Tether held about $141 billion in direct and indirect U.S. Treasury exposure at the end of March, making it the 17th-largest holder globally at the time.
- [18]
Tether said USDT supply reached about $184.6 billion by June 30, more than 60% of the stablecoin market.
- [19]
In its latest quarterly results Tether reported $1.5 billion in second-quarter net operating profit, with reserves exceeding liabilities by roughly $4.1 billion.
- [20]
About 659 of the Israeli-designated wallets transacted predominantly in USDT.
- [21]
About 58 of the OFAC-designated wallets transacted predominantly in USDT.
- [22]
The Israeli and OFAC lists sum to 858 wallets, 12 more than the 846 total, implying some wallets appear on both.
- [23]
The smugglers' $603 million equals about 0.33% of USDT's $184.6 billion supply.
- [24]
Tether's $550 million of 2026 Iran-linked freezes equals about 0.30% of USDT's $184.6 billion supply.
- [25]
About 89% of the 846 wallets were designated by Israel's bureau.
Sources
8 independent publishers whose own reporting we read for this story.
- cointelegraph.comTether Says It Helped Freeze $550M in Iran-Linked USDT
1 article · September 28, 2026
- crowdfundinsider.comHere is the Report by Senate Subcommittee on Iran’s Usage of Crypto and “Shadow Banking,” Outlines Usage of Tether
1 article · September 30, 2026
- cryptobriefing.comSenate Democrats put Tether’s USDT under the microscope over Iran sanctions evasion
1 article · October 6, 2026
- cryptotimes.ioSenate Investigation Finds Widespread Use of Tether’s USDT in Iran-Linked Wallets
1 article · September 28, 2026
- decrypt.coUS Senator Blumenthal Calls Tether's USDT a 'Superhighway' for Iranian Sanctions Evasion
1 article · September 30, 2026
- engadget.comSenate report claims Iran is using Tether's stablecoin to evade sanctions
2 articles · September 29, 2026
- finance.yahoo.comTop buyer of U.S. debt caught up in Iran sanctions case
1 article · September 28, 2026
- news.bitcoin.comTether and Senate Democrats Clash Over Iran's Shadow Crypto Network
1 article · September 28, 2026