State attorneys general have a rich history of working with the United States Department of Justice Antitrust Division, the Federal Trade Commission, businesses, and the private bar to protect consumers through antitrust regulation.


Antitrust Litigation Database

The NAAG Antitrust Litigation Database database contains a comprehensive list of state, multitstate and federal-state antitrust cases from 1990-2011. Users can conduct a full text search or search cases by lead state, year, industry, defendant, and cause of action.

NAAG Antitrust Committee

The webpage provides up to date information on the latest efforts by state attorneys general to enforce state and federal antitrust laws and advocate for efficient and open markets. The webpage includes information on recent advocacy efforts by state attorneys general and press releases on recent cases.  

Policy Papers and Talks

Renata Hasse, Acting Assistant Attorney General, Antitrust Division, U.S. Dept. of Justice, Protecting Competition Across 50 United States: Advocacy and Cooperation in Antitrust Enforcement, Address Before the American Bar Association Fall Forum (Nov. 17, 2016). 

Stephen D. Houck, The State of State Antitrust Enforcement, National State Attorneys General Program, Columbia Law School (Oct. 2009).

  • The report, drafted in advance of the October 9, 2009 “Antitrust Federalism: Enhancing the Federal-State Relationship” conference, provides an overview of the history of state antitrust enforcement, a discussion of antitrust efforts on behalf of states and multi-state coalitions as of 2009, and recommendations to facilitate cooperation between federal and state antitrust agencies.

From the Tierney Blog

From Tierney in the Press

For additional resources on antitrust, see the Antitrust section of the National State Attorneys General Program (AGP) archive: