David Horn’s practice focuses on advising clients on US sanctions programs and US export control law, including the Export Administration Regulations, anti-boycott provisions, OFAC sanctions requirements and the International Traffic in Arms Regulations. In representing clients in a variety of industries, including aerospace, finance and information technology, Mr. Horn’s work has involved responding to federal agency enforcement actions, providing legislative and strategic advice, and assisting with licensing, product classifications and voluntary self-disclosures.

Additionally, Mr. Horn has significant experience with trade remedy litigation before the US Court of International Trade, US Department of Commerce and International Trade Commission.


  • Prior to joining WilmerHale, Mr. Horn worked for Global Financial Integrity, a nonprofit in Washington DC, where he researched and wrote on matters of international money laundering and taxation. Mr. Horn was also an intern in the Litigation Bureau of the New York State Office of the Attorney General. Additionally, Mr. Horn served on the communications staff for Senator Tom Daschle’s Senate re-election campaign.

    In law school, Mr. Horn was topics editor of the Boston College Law Review, and was the winner of Boston College Law School’s Grimes Moot Court Competition. Mr. Horn also worked in the BC Defenders Clinic, where he represented indigent defendants in criminal matters in Suffolk County.

    Recent Highlights

    • Successfully represented one of the world’s largest international shipping groups with respect to the application of sanctions imposed under ISA/CISADA
    • Assisted a major US government contractor in developing ITAR compliance policies and training programs required for the provision of logistics services to the US military
    • Litigated on behalf of a coalition of the US plastics industry before the US Department of Commerce, International Trade Commission, and US Court of International Trade concerning dumped and subsidized imports from China, Taiwan and Brazil


  • Recognized as a "Rising Star" in the 2020-2022 editions of The Legal 500 United States for his international trade practice
  • Selected as a "Rising Star" in the 2016–2019 editions of Washington DC Super Lawyers

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  • Education

    • JD, Boston College Law School, 2009

      cum laude Topics Editor, Boston College Law Review
    • BA, English, University of Michigan, 2003

  • Admissions

    • Massachusetts

    • New York

    • District of Columbia