Treasury: Financial Crimes Enforcement Network(FinCen)
"FinCEN’s core mission is the effective administration of the Bank Secrecy Act (BSA). Enacted in 1970, the BSA is the nation’s first and most comprehensive anti-money laundering statute.

FinCEN) brings people and information together to fight the complex problem of money laundering, linking federal, state, local and international law enforcement, regulatory and financial communities together for the purpose of preventing and detecting financial crimes."

The site has a hot line for reporting terrorist activity dealing with financial institutions.