Dr. Warren spent 25 years with the Internal Revenue Service investigating complex schemes involving tax fraud, money laundering, currency structuring, and related financial crimes. He began his career as a revenue agent in the Examination Division in the District of Columbia, where he served as a technical tax advisor on the successful criminal investigations of a public housing manager, a former Treasurer of the United States, and a former President of the District of Columbia School Board. Dr. Warren transferred to the Criminal Investigation Division of the IRS in 1994 and graduated from the Special Agent Basic Training program at the Federal Law Enforcement Training Center in Glynco, GA. Over the next 22 years, he investigated a wide variety of white-collar fraud cases involving human trafficking, bankruptcy fraud, and identity theft, along with traditional cases involving income tax evasion. From 2001 to 2005, he served as a supervisory special agent in Milwaukee (WI), and ended his career as a senior analyst in the Financial Crimes Section at IRS Headquarters in DC. Dr. Warren received numerous awards during his career, including three U.S Department of Justice Awards for Public Service presented by the U.S. Attorney’s Office for the Eastern District of Virginia. He retired from the IRS in 2016. Dr. Warren worked for the accounting firm of Coopers and Lybrand prior to joining the IRS. Dr. Warren holds both an MBA and an undergraduate degree in accounting (summa cum laude) from the University of Maryland at College Park, and a Doctor of Business Administration (DBA) from Case Western Reserve University. He is a Certified Public Accountant (CPA) and earned the Certified in Financial Forensics (CFF) designation from the American Institute of Certified Public Accountants (AICPA).