John Barker’s practice focuses on national security matters including export controls and trade sanctions administered by the Office of Foreign Assets Control at the US Department of the Treasury (OFAC), and compliance with the Foreign Corrupt Practices Act (FCPA). He helps companies and institutions establish compliance plans, obtain export authorizations, and provides representation in enforcement proceedings. He also represents companies before the Committee on Foreign Investment in the United States (CFIUS) in reviews required under the US Exon-Florio statute. Mr. Barker came to the firm from the US Department of State, where he served as the Deputy Assistant Secretary for Nonproliferation Controls and, prior to that, as Deputy Assistant Secretary for Export Controls.

In his most recent position at the State Department, Mr. Barker supervised the development and implementation of US policy on multilateral nonproliferation and security regimes, and nonproliferation sanctions. As the Deputy Assistant Secretary for Export Controls, he supervised the US munitions licensing and defense trade compliance under the International Traffic in Arms Regulations (ITAR) including imposing sanctions on companies for violation of US export control law. He led US negotiating teams to more than 20 countries, supervised audits of defense trade manufacturing facilities, and oversaw the US government’s nonproliferation review of dual-use exports subject to the Export Administration Regulations (EAR).

Mr. Barker testified frequently before the US Congress on a wide variety of export control matters including trade sanctions, preventing the transfer of arms and dual-use technology to state sponsors of terrorism, the Export Administration Act, export licensing and compliance, and regulation of the aerospace industry.

Mr. Barker was recognized nationally in Chambers USA America's Leading Lawyers for Business for his work on export controls and trade sanctions.

Mr. Barker received his JD from the University of Michigan Law School in 1986, where he was Managing Editor of the Journal of Law Reform. After his clerkship with the Honorable James S. Holden of the US District Court for the District of Vermont, he was appointed a Visiting Scholar at the Harvard Center for International Affairs. He also served as a Visiting Fellow at London’s International Institute for Strategic Studies. From 1988 to 1993, he was an associate at Graham & James, where he served in the firm’s Palo Alto, Tokyo, and San Francisco offices. While at Graham & James he co-authored a Stanford University study on ballistic missile proliferation.


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Banking Law360. Also ran in International Trade Law360, Public Policy Law360, Retail & E-Commerce Law360, and Telecommunications Law360. New York



The Best Lawyers in America 2010-2016 for International Trade and Finance Law
The Legal 500 US 2013-2015 "Leading Lawyer" for Litigation: International Trade
Chambers USA: America's Leading Lawyers for Business 2005-2015 for International Trade: Export Controls & Economic Sanctions (Nationwide)


  • JD, University of Michigan Law School, 1986
  • AB, Dartmouth College, 1983
  • District of Columbia
  • U.S. - District Court, Vermont, The Honorable James S Holden
  • German

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