After law school, Leiter served as a law clerk to Associate Justice
Stephen Breyer of the
Supreme Court of the United States, and to Chief Judge
Michael Boudin of the U.S. Court of Appeals for the First Circuit. From 2002 until 2005, he served with the
Department of Justice as an
assistant United States attorney for the
Eastern District of Virginia. At the Justice Department, Leiter prosecuted a wide variety of federal crimes, including narcotics offenses, organized crime and racketeering, capital murder, and money laundering. Leiter then served as the deputy general counsel and assistant director of the
President's Commission on the Intelligence Capabilities of the United States Regarding Weapons of Mass Destruction (the "
Robb-Silberman Commission"). While with the Robb-Silberman Commission, Leiter focused on reforms of the U.S. Intelligence Community, in particular the development of what is now the
National Security Branch of the
Federal Bureau of Investigation. Immediately prior to joining NCTC, Leiter served as the deputy chief of staff for the
Office of the Director of National Intelligence (ODNI). In this role, Mr. Leiter assisted in the establishment of the ODNI and coordinated all internal and external operations for the ODNI, to include relationships with the
White House, the
Departments of Defense, State, Justice, and
Homeland Security, the
Central Intelligence Agency, and
Congress. He was also involved in the development of national intelligence centers, including NCTC and the
National Counterproliferation Center, and their integration into the larger Intelligence Community. In addition, he served as an intelligence and policy advisor to the director of national intelligence and his principal deputy. He became director of the NCTC in 2007, and was asked to stay on by the Obama administration in 2009. On June 9, 2011, President Obama praised and thanked Mike Leiter in a statement regarding his resignation; "Serving in two Administrations since 2007, Mike led the National Counterterrorism Center with dedication and unwavering determination during challenging and demanding times and our nation is grateful for his many contributions to our safety and security. Mike has been a trusted advisor to me and to the entire national security team, providing us with an in-depth understanding of terrorist activities that affect our Nation's security. I am confident that Mike will be leaving the National Counterterrorism Center, the counterterrorism community, and the nation in a significantly stronger position to confront the terrorist threats we face." Leiter also became a counterterrorism, cybersecurity and national security analyst for
NBC News shortly thereafter. Since becoming a part of Palantir Leiter has continued to publicly speak and participate in forums for discussion of national security and counterterrorism. Leiter joined Leidos as executive vice president for business development and strategy in November 2014. He currently serves as the executive vice president and head of integration at Leidos and reports to the chief executive officer. In this role, he is responsible for leading the integration management team that is responsible for all planning activities associated with the transaction to combine Leidos and Lockheed Martin's Information Systems and Global Solutions (IS&GS) business. The merger is expected to close in late 2016. In September 2017, Leiter joined international law firm Skadden, Arps, Slate, Meagher & Flom in Washington, D.C. as a partner in its national security practice. In 2020, Leiter, along with over 130 other former Republican national security officials, signed a statement that asserted that
President Trump was unfit to serve another term, and "To that end, we are firmly convinced that it is in the best interest of our nation that Vice President Joe Biden be elected as the next President of the United States, and we will vote for him." As of 2024, he chairs the board of trustees of
Rand Corporation. ==Controversy==