Treasury has ordered a cutoff of crypto exchange MEXC Global’s transfers through U.S. financial institutions, alleging at least $16 billion in illicit transactions. Its Financial Crimes Enforcement Network, or FinCEN, issued the order on November 6, 2026. Source
The prohibition takes effect 30 days after publication in the Federal Register—not 30 days after the announcement. Treasury’s announcement does not specify a calendar effective date. Once effective, it will prevent covered U.S. financial institutions from sending funds to or receiving funds from MEXC, including cryptocurrency transfers. At those institutions, crypto doesn’t get a separate exit lane. SourceSource
MEXC says it is operating normally, is reviewing the order with its legal and compliance teams, and has launched an independent review of its anti-money-laundering and sanctions controls, according to CoinDesk. The exchange also says user assets remain secure, Coinpedia reports. SourceSource
A transfer cutoff, not a global shutdown
The restriction does not shut MEXC down worldwide or automatically freeze customer assets, as CryptoSlate explains. Existing Bank Secrecy Act requirements and sanctions obligations remain in place. SourceSource
CryptoSlate reports that the measure could still complicate MEXC’s banking and liquidity relationships; how much disruption follows remains unclear. Source
What Treasury alleges
Treasury says the exchange facilitated at least $16 billion connected to sanctions evasion, cybercrime and other illicit activity between May 2021 and May 2026, including activity involving Iran, North Korea and Russia. It alleges that “severe deficiencies” in MEXC’s anti-money-laundering controls allowed transactions involving jurisdictions the exchange’s own policies prohibit. Source
Within that total, Treasury cites:
- Nearly $1.5 billion linked to Russian sanctions evasion, including $232 million in direct transactions with entities sanctioned by the U.S., EU or UK. Separately, Treasury says MEXC continued processing transactions with Russian exchange Garantex and its successor Grinex as recently as June 2026. Source
- Approximately $1 billion in direct transactions with more than 40 Iranian crypto exchanges, some of them sanctioned, during the May 2021–May 2026 period. Treasury also cites approximately $22 million in transactions for Iran’s central bank, the Islamic Revolutionary Guard Corps and its Qods Force. Source
Treasury announced the action under Operation Economic Outcast, its Iran-focused campaign. The legal authority is Russia-focused: Section 9714(a) of the Combating Russian Money Laundering Act. CoinDesk explains that the order formally rests on MEXC’s alleged connection to Russian illicit finance. The campaign messaging and the legal basis are not quite the same thing. SourceSource
A post warns against direct transfers to OKX
A November 7 Chinese-language post from the account star_okx urged users to temporarily avoid direct transfers from MEXC to OKX. The account’s authority to speak for OKX is unverified. Source
The post claims OKX substantially strengthened its controls before the deadline and says funds arriving from MEXC may be frozen for review, with related accounts potentially investigated further. It does not establish official OKX policy or document a specific customer freeze. Source
