US Treasury Blacklists MEXC Over $16B in Alleged Illicit Crypto Activity

The U.S. Treasury's Financial Crimes Enforcement Network (FinCEN) has ordered American financial institutions to halt transactions with MEXC Global, alleging the exchange facilitated at least $16 billion in illicit activity including sanctions evasion and cybercrime. The action, taken under Operation Economic [Fury], marks a significant escalation in U.S. scrutiny of offshore crypto platforms. The designation means U.S. banks and brokers must treat MEXC as a restricted counterparty, potentially cutting the exchange off from dollar-clearing rails. The move matters because MEXC is among the largest offshore venues by trading volume, and the $16 billion figure represents one of the largest illicit-activity estimates tied to a single exchange. What to watch next: whether MEXC contests the designation, how its spot volumes and token listings respond, and whether other offshore exchanges face similar FinCEN scrutiny.