2022 recipient of Global Competition Review’s Lifetime Achievement Award, Deb has served as a trusted advisor to firms for over 40 years on strategic transactions, civil and criminal investigations and litigation. In addition to her years of private practice, she has served in key government enforcement and policy roles, including as Deputy Assistant Attorney General and Acting Assistant Attorney General of the Antitrust Division of the U.S. Justice Department; Chair of the Antitrust Modernization Commission, a bi-partisan blue ribbon commission created by Congress to advise Congress and the President on the state of U.S. antitrust enforcement; and as co-chair of the International Competition Policy Expert Group. Ms. Garza chaired the Antitrust Section of the American Bar Association during its 2018-19 year and served in the leadership of that organization and the Federalist Society Corporations, Securities and Antitrust Practice Group for many years. She is currently a member of the Uniform Commercial Code Antitrust Study Committee.


  • Global Competition Review Lifetime Achievement Award (2022)
  • Chambers Global, Competition/Antitrust (US) (2012-2020)
  • Chambers USA – America’s Leading Business Lawyers , Antitrust (2009-2019)
  • Best Lawyers in America, Antitrust (2013-2020)
  • Washington DC Super Lawyers, Antitrust Litigation (2007-2019)
  • Global Competition Review, “Pathmaker for Diversifying Competition” award (2017)
  • Legal 500 US, Antitrust – Cartel and Civil Litigation (2015-2017); Antitrust – Merger Control (2013-2017)
  • Latinvex, “Latin America’s Top 50 Female Lawyers” (2015)
  • Euromoney, Benchmark: Expert Guide to America’s Leading Litigation Firms and Attorneys – Antitrust Litigation Star, DC (2013-2015); Antitrust Merger Control (2013-2017)
  • Washington DC Super Lawyers, “The Top 100 and the Top 50 Women” (2013-2014)
  • Euromoney, America’s Women in Business Awards, “Best in Antitrust & Competition” (2013)
  • Competition Law360, “Most Admired Attorneys” (2010)
  • The National Law Journal, “Washington’s Most Influential Women Lawyers” (2010), “50 Most Influential Women in America” (2007) and “100 Most Influential Lawyers in America” (2006)