# Treasury moves to cut MEXC off from US banks, citing at least $16 billion in illicit flows The Financial Crimes Enforcement Network has applied a Russia-focused anti-money-laundering power, previously used against small venues, to a major global exchange, in a week when the Treasury also sanctioned eight Canadian money-service firms over Iran and 41 companies tied to Cambodia's Prince Group. - Published: 2026-11-08T05:54:51.727Z - Canonical: https://polylog.news/crypto/2026-11-08/treasury-moves-to-cut-mexc-off-from-us-banks-citing-at-least - Publisher: Polylog (Crypto desk) - Section: crypto - Sources: [CoinDesk](https://www.coindesk.com/business/2026/11/07/u-s-treasury-moves-to-cut-off-crypto-exchange-mexc-over-usd16-billion-in-alleged-illicit-flows), [Bitcoin Magazine](https://bitcoinmagazine.com/news/fincen-cuts-off-mexc-us-financial-system), [Polylog editors](https://polylog.news), [FinCEN](https://www.fincen.gov/news/news-releases/operation-economic-outcast-severs-mexc-globals-access-us-financial-system), [24/7 Wall St.](https://247wallst.com/investing/cryptocurrency/2026/11/07/treasury-is-cutting-mexc-off-from-u-s-banks-over-16-billion-in-illicit-transactions-what-happens-to-the-crypto-held-there/), [CryptoSlate](https://cryptoslate.com/us-sanctions-hit-41-companies-accused-of-keeping-prince-groups-scam-network-running/), [The Record](https://therecord.media/us-issues-more-sanctions-against-prince-group-scammers), [Lowenstein Sandler (Bitzlato precedent)](https://www.lowenstein.com/news-insights/publications/client-alerts/fincen-issues-historic-order-against-virtual-currency-exchange-facilitating-russian-illicit-finance-investment-management) The Financial Crimes Enforcement Network (FinCEN) issued a final order under section 9714(a) of the Combating Russian Money Laundering Act. Once it takes effect, US financial institutions may not send funds to or receive funds from MEXC Global. The ban applies [30 days after the order appears in the Federal Register](https://bitcoinmagazine.com/news/fincen-cuts-off-mexc-us-financial-system). The Treasury said MEXC handled [at least $16 billion in transactions](https://t.me/BWEnews/16607) linked to sanctions evasion by Iran, North Korea and Russia, and to cybercrime, according to Reuters as relayed by BWE News. FinCEN presented the action as part of a campaign it calls [Operation Economic Outcast](https://www.fincen.gov/news/news-releases/operation-economic-outcast-severs-mexc-globals-access-us-financial-system). [CoinDesk noted](https://www.coindesk.com/business/2026/11/07/u-s-treasury-moves-to-cut-off-crypto-exchange-mexc-over-usd16-billion-in-alleged-illicit-flows) that the Treasury described the move as part of its pressure on Iran, but the legal basis is MEXC's alleged role in Russian illicit finance, because section 9714 is a Russia statute. The order does not tell MEXC to shut down and does not freeze customer balances on the platform, [24/7 Wall St. reported](https://247wallst.com/investing/cryptocurrency/2026/11/07/treasury-is-cutting-mexc-off-from-u-s-banks-over-16-billion-in-illicit-transactions-what-happens-to-the-crypto-held-there/). FinCEN's findings are not a criminal conviction. The sources reviewed for this article do not include a detailed rebuttal from MEXC. The tool has been used against much smaller targets. In January 2023, FinCEN used it for the first time against Bitzlato, which it said had [received nearly half a billion dollars](https://www.lowenstein.com/news-insights/publications/client-alerts/fincen-issues-historic-order-against-virtual-currency-exchange-facilitating-russian-illicit-finance-investment-management) from illicit activity. A 2024 order targeted the exchanger PM2BTC. The MEXC figure is more than 30 times the Bitzlato figure. The Treasury took other crypto-linked actions the same week. It [sanctioned eight Canadian money-service businesses](https://t.me/cointelegraph/73112) over crypto transactions it links to Iran and offered up to $20 million for information on Iran's nuclear program. Washington also [expanded its naval blockade of Iran](https://t.me/cointelegraph/73115) with a task force aimed at the country's ground transport. The Office of Foreign Assets Control (OFAC) separately named four individuals and [41 companies](https://cryptoslate.com/us-sanctions-hit-41-companies-accused-of-keeping-prince-groups-scam-network-running/) that it says concealed ownership and kept the Cambodia-based Prince Group's scam operations running. [The Record](https://therecord.media/us-issues-more-sanctions-against-prince-group-scammers) described it as the third round against the group. ## What this means The order works through banking access, not the blockchain. Once it takes effect, MEXC loses US dollar rails: US banks, payment processors and possibly US-regulated stablecoin issuers can no longer deal with it. Market makers and arbitrage desks that need US banking relationships will have to choose between MEXC and their banks. The open legal question is whether on-chain stablecoin transfers by US-regulated issuers count as "transmittals of funds." If they do, MEXC loses its main source of dollar liquidity. If they do not, the order mostly affects fiat on-ramps that MEXC's largely non-US users seldom use. Washington's goal is to raise the cost of serving sanctioned users without freezing ordinary customers. The 30-day window lets counterparties leave in an orderly way. After the 2023 Bitzlato order, the exchange lost its counterparties and stopped functioning. The desk's read is that MEXC's major liquidity partners will cut US-linked exposure within weeks, and licensed rivals such as Binance and OKX will take some of its order flow. The read would be wrong if MEXC reaches a negotiated exemption or a remediation agreement before the effective date, as the order permits. ## What to watch - The Federal Register publication date. It starts the 30-day clock and shows when US counterparties must be out. - Whether Circle or Tether changes how it treats MEXC deposit addresses. This would settle whether the order reaches stablecoin rails or only bank wires. - Further section 9714 orders against other large offshore exchanges. A second case would show the MEXC order is a template, not a one-off.