FinCEN MEXC order cuts exchange from U.S. banking

Washington has moved to shut one of the world's 20 largest crypto exchanges out of the American banking system. The FinCEN MEXC order, issued on November 6, prohibits U.S. financial institutions from sending or receiving any funds transfer that involves MEXC Global once it takes effect.

What happened

Treasury's Financial Crimes Enforcement Network said MEXC Global moved at least $16 billion connected to sanctions evasion, cybercrime and other illicit activity between May 2021 and May 2026. Nearly $1.5 billion of that was tied to Russian sanctions evasion, including $232 million in direct business with entities sanctioned by the U.S., the EU and the UK. The agency said the platform was still dealing with Garantex and its successor Grinex as late as June 2026, more than four years after Garantex was designated.

Iran features heavily in the case. FinCEN counted roughly $1 billion in direct transactions with more than 40 Iranian crypto exchangers and about $22 million for the Central Bank of Iran and the Islamic Revolutionary Guard Corps and its Qods Force. It also cited flows tied to the A7 network and the A7A5 stablecoin, ransomware, scams and darknet markets.

The order was issued under section 9714(a) of the Combating Russian Money Laundering Act as part of Treasury's Operation Economic Outcast. By the agency's description, MEXC was founded in 2018, handled more than $1 billion a day as of September and kept about $5 billion in reserves. Decrypt reported that FinCEN pointed to "severe deficiencies" in the exchange's anti-money-laundering controls. Treasury Secretary Scott Bessent said financial institutions "cannot have it both ways" when it comes to Iran.

Why it matters

A funds-transfer ban does not seize customer balances, but it strips a venue of access to dollar rails through U.S. banks, payment firms and money transmitters. In practice, counterparties tend to cut ties well before the legal deadline. Treasury's earlier A7 network sanctions hit the same Russian evasion ecosystem; the FinCEN MEXC order carries that pressure from networks and stablecoins to a top-tier trading venue.

Timing adds weight. The industry is still working through the North Korea-linked theft at Binance, which the exchange pinned on TraderTraitor, and compliance teams at market makers, on-ramps and stablecoin issuers now have a fresh reason to audit any exposure to MEXC accounts and wallets. Tokens that trade mainly on MEXC could see thinner liquidity if U.S.-connected firms step away.

What's next

The 30-day clock starts when the order is published in the Federal Register, leaving U.S. institutions a short window to unwind relationships. Treasury said the FinCEN MEXC order does not change existing Bank Secrecy Act duties or sanctions administered by OFAC, and that violations can lead to civil or criminal penalties.

Watch for MEXC's public response, for announcements from stablecoin issuers and payment partners, and for any further actions under the same operation. The full findings are in Treasury's press release.