David O’Neil is Co-Chair of the White Collar & Regulatory Defense Group and a partner in the Washington, D.C. office. Consistently recognized as one of the Nation’s top litigators and white collar defense attorneys, Mr. O’Neil represents companies and individuals in their highest stakes matters. His practice focuses on controversies that not only pose legal risk but also threaten political and reputational harm. He has represented the largest multinational companies and financial institutions, as well as CEOs, Board Chairs, Cabinet Secretaries, and world leaders. A former leader of the Criminal Division at the Department of Justice, Mr. O’Neil has tried numerous cases to verdict in federal court and argued six cases in the Supreme Court. Prior to joining Debevoise in January 2015, Mr. O’Neil served for eight years in prominent positions within the Department of Justice. In early 2014, the President and Attorney General designated Mr. O’Neil to lead the Criminal Division, where he was responsible for supervising more than 600 attorneys investigating and prosecuting the full range of federal crimes, including corporate malfeasance, cybercrime, fraud offenses and money laundering. Mr. O'Neil also served as Deputy Assistant Attorney General for the Fraud Section. In that capacity, he supervised more than 100 prosecutors engaged in nationwide enforcement of the FCPA, healthcare fraud and securities and financial fraud.