Current Affairs Security

Senate Accuses Tether of Enabling Iran's Shadow Banking. Tether Says It's Frozen Half a Billion in Assets.

2026-09-29

Democrats on the Senate's Permanent Subcommittee on Investigations dropped a 28-page report Monday alleging that Tether's USDT has become Iran's financial escape hatch. The accusation: the stablecoin has let the Iranian government bypass international sanctions and fund terrorist organisations, including Hamas.

The numbers are alarming. The subcommittee's staff analysed 846 wallets tied to Iran—designated by either U.S. authorities or Israeli agencies between June 2021 and August 2026. Result: 84% of them transacted almost exclusively in USDT. Among addresses flagged by Israel's counter-terror financing bureau, the figure hit 87%. Iran's unofficial financial networks processed roughly $2 billion in transactions over the previous year, though the report didn't break down how much of that moved through Tether alone.

Senator Richard Blumenthal of Connecticut, the top Democrat on the subcommittee, wasn't mincing words. He framed this as crypto's systematic betrayal of U.S. foreign policy. The report alleges Tether "repeatedly failed" to freeze Iran-linked wallets and suggested the company's enforcement gaps practically invited abuse. Terrorist groups, the report noted, actually switched their preferred coin from Bitcoin to USDT over time. That's not coincidence.

The specifics are damning. Two sanctioned Iranian nationals received $603 million in USDT between 2021 and 2025. Meanwhile, $34.6 million kept flowing through 34 wallets for nine months after Tether said it would freeze them. In April 2026, when OFAC designated two Iran-linked wallets, they were holding $344.2 million in USDT. Four addresses linked to Iran's central bank held $131 million when frozen in July.

Blumenthal's critique went deeper. Tether, originally founded in the U.S. and still plugged into American financial institutions like Cantor Fitzgerald, gives Iran something it shouldn't have: unparalleled access to a high-liquidity international payment system that sanctions were meant to deny them. He's referred the subcommittee's findings to both Treasury and Justice, demanding formal investigations into Tether's sanctions compliance and anti-money-laundering procedures.

Tether fired back the same day with a blog post and statement. The company claimed it froze approximately $550 million in Iran-linked wallets during 2026 alone. It specified the $344 million across two addresses in April and the $130-plus million across four TRON wallets in July. The company said it's assisted in over 2,900 investigations worldwide—1,600 involving U.S. authorities—and frozen more than $4.9 billion in assets globally.

Here's what makes this sting: competing stablecoins barely showed up in the subcommittee's analysis. Circle's USDC, the second-largest by market cap, barely registered among Iran-linked wallets. That suggests USDT's dominance in Iran's shadow financial ecosystem isn't random. Either design choices or compliance differences between stablecoin issuers explain it.

The core tension is now unavoidable. Should cryptocurrency platforms maintain open-access principles, or do sanctions compliance obligations override that? Blumenthal's pushing for regulatory scrutiny—specifically whether Tether meets the same anti-money-laundering standards imposed on traditional banks. Congress is watching. Stablecoin regulation is coming.

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