Partner
O'Melveny & Myers LLP
Washington, District of Columbia
AML Lawyer & Former FinCEN’s Deputy Director

AnnaLou Tirol counsels clients on anti-money laundering (AML) and fintech regulatory, compliance, and enforcement issues, drawing on two decades of government experience, most recently as Deputy Director of the US Department of the Treasury’s Financial Crimes Enforcement Network (FinCEN).
Few lawyers share AnnaLou’s deep familiarity with AML laws and regulations. As FinCEN’s Deputy Director, the bureau’s second highest official, AnnaLou oversaw FinCEN’s operations, programs, and policy, including legislative and regulatory matters, public-private partnerships with financial institutions and fintechs, and enforcement and compliance matters related to the Bank Secrecy Act (BSA). Following Congress’ January 2020 enactment of the Anti-Money Laundering Act of 2020, AnnaLou led FinCEN’s implementation of the most significant legislation to modernize the BSA since the USA PATRIOT Act, including the Corporate Transparency Act’s beneficial ownership requirements.
Prior to joining FinCEN, AnnaLou served as the Acting Chief of the Public Integrity Section of the U.S. Department of Justice’s (DOJ) Criminal Division from 2016 to 2019. In that role, she oversaw approximately 35 prosecutors litigating sensitive and complex public corruption and election crimes cases nationwide. In her 15 years with DOJ, AnnaLou served in multiple capacities, including as an Assistant U.S. Attorney in the Southern District of California, leading complex white collar investigations and prosecutions involving financial fraud, public corruption, money laundering, and other crimes, and trying 15 jury trials to verdict. She also served as an overseas Legal Advisor for DOJ, running rule of law programs targeting money laundering, public corruption, terrorist financing, fraud, and financial crimes in Panama City, Panama and Belgrade, Serbia.
AnnaLou is also committed to mentoring and developing young and diverse attorneys. She is an Adjunct Professor of Law at Georgetown University Law Center and was a founding member of FinCEN’s Women’s Leadership Series
O'Melveny & Myers LLP
Washington, District of Columbia
U.S. Department of the Treasury, Financial Crimes Enforcement Network | Strategic Operations Division
(appointed)District of Columbia
U.S. Department of the Treasury, Financial Crimes Enforcement Network
(appointed)District of Columbia
U.S. Department of Justice (DOJ), Public Integrity Section, Criminal Division
(appointed)District of Columbia
U.S. Department of Justice (DOJ), Criminal Division
(appointed)Panama City, District of Columbia, Panama
Criminal Division
(appointed)Belgrade, Serbia
U.S. Department of Justice (DOJ), Public Integrity Section
(appointed)District of Columbia
U.S. District Court
(appointed)California
Served as judicial law clerk to the Honorable Ruben B. Brooks, U.S. Magistrate Judge, researching and drafting opinions, orders, and bench memoranda.
U.S. Department of Justice (DOJ), Public Integrity Section
(appointed)District of Columbia
U.S. Attorney’s Office, United States Attorneys' Offices , San Diego
(appointed)California
April 2025
Deputy Director, Financial Crimes Enforcement Network, U.S. Department of the Treasury. Acting Chief, Public Integrity Section, Criminal Division, U.S. Department of Justice. Assistant U.S. Attorney, U.S. Attorney’s Office, Southern District of California. Resident Legal Advisor, Office of Overseas Prosecutorial Development, Assistance and Training, Criminal Division, U.S. Department of Justice.
U.S. Department of the Treasury
March 2025
U.S. Department of State
March 2025
Assistant Attorney General
March 2025
FinCEN
March 2025
O'Melveny & Myers LLP
March 2025
LinkO'Melveny & Myers LLP
February 2025
LinkO'Melveny & Myers LLP
February 2025
LinkO'Melveny & Myers LLP
February 2025
LinkO'Melveny & Myers LLP
January 2025
LinkACAMS South Florida Chapter Financial Crime Forum
November 2024
ACAMS South Florida Chapter Financial Crime Forum
November 2024
ACAMS Webinar
November 2024
16th Annual STEP International Tax and Estate Planning Forum
June 2024
New York Bar Association
May 2024
Business Law Section and Corporate Counsel Section NYSBA Annual Meeting
January 2024
82nd Institute on Federal Taxation
November 2023