Daniel handles, among other matters, complex criminal and civil litigation, domestic and international advisory matters and internal corporate investigations.

Immediately prior to joining private practice, Daniel served as the Chief of the Criminal Division of the United States Attorney's Office for the District of Columbia, the nation’s largest United States Attorney’s Office. There he was responsible for supervision of eighty-five Assistant United States Attorneys involved in the prosecution of all federal offenses in the District of Columbia. He also served as a technical expert for U.S. Department of State funded rule of law programs in Croatia, Estonia, Kazakhstan, and Thailand.

Before accepting the appointment to Criminal Chief of the U.S. Attorney's Office for the District of Columbia, Daniel was Assistant Inspector General for Investigations at the Central Intelligence Agency. There he conducted and supervised numerous investigations concerning allegations of misconduct by employees, contractors and vendors involved in CIA programs. In that position, he routinely interacted with senior officials within the intelligence community, other executive branch agencies and Congress concerning intelligence investigations.

From 1996 to 1998, Daniel served as an Associate Deputy Attorney General at the Department of Justice and was Director of the Department's Executive Office for National Security. There he was responsible for the coordination and oversight of the national security activities of the Department of Justice, including intelligence operations, international law enforcement, relations with foreign countries and the use of classified information. Reporting directly to the Attorney General and Deputy Attorney General and acting with their authority in national security matters, Daniel was a primary point of contact between the Department of Justice and other executive branch agencies with national security interests such as the National Security Council, the Department of State and the Department of Defense.

In addition, Daniel previously served as Chief of the Transnational and Major Crimes Section of the United States Attorney's Office for the District of Columbia where he coordinated and supervised the prosecution of crimes over which the United States asserts extra-territorial jurisdiction, such as international terrorism, air-piracy, hostage-taking, money laundering and espionage as well as violations of the Foreign Corrupt Practices Act, export control regulations, trade sanctions and related matters.

Presentations and Speaking Engagements
Speaker,  "The Anatomy of a Look Back," The New York Metropolitan Chapter of the Association of Certified Anti-Money Laundering Specialists (AML) Workshop, New York, New York (November 5, 2007).