Thomas Barnett

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Thomas O. Barnett
Occupation Assistant attorney general for anti-trust
Employer US Department of Justice
Location Washington DC

Thomas O. Barnett is assistant attorney general for anti-trust at the US Department of Justice, assuming the position in February 2006[1].

As the senior enforcement official for US competition policy, Barnett has overseen the first review of a deal involving a US derivatives exchange - clearing the Chicago Mercantile Exchange's successful bid for the Chicago Board of Trade[2].

Barnett's division has also triggered controversy in the industry with its call in January 2008 for a review of the practice of allowing futures exchanges - excluding energy-focused operations - to control their own clearinghouses.


Barnett became the anti-trust division's acting assistant attorney general on June 25, 2005 and previously served as the deputy assistant attorney general for civil enforcement, a position occupied since April 18, 2004.

Prior to the DoJ he was a partner in the Washington DC office of Covington & Burling, and clerked for the Hon. Harrison Winter of the US Court of Appeals for the Fourth Circuit[3].


Barnett graduated from Harvard Law School in 1989 and received a Master of Science degree in economics in 1986 from the London School of Economics. He received his BA in 1985 from Yale University.


  1. Barnett appointed interim chief of antitrust division. Financial Times.
  2. Opponents of all-Chicago deal find case has backfired. Financial Times.
  3. Biography. DoJ.