The Financial Crimes Enforcement Network (FinCEN) is a bureau of the U.S. Treasury that regulates financial crimes.

Quotes that support claims

The Financial Crimes Enforcement Network (FinCEN) told prosecutors that, under their guidelines, Samourai Wallet didn’t qualify as a money transmitting business and did not need a license to operate.

FinCEN explicitly informed SDNY prosecutors that Samourai Wallet’s non-custodial design did not require money transmitter licensing.