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William Isasi has more than 20 years of experience advising governments and companies on all aspects of antidumping and countervailing duty proceedings and World Trade Organization (WTO) litigation. In private practice, he has represented companies in the aircraft, steel, oil and gas, chemical, paper, and ball bearing industries, and successfully secured low antidumping and countervailing duty tariffs for his clients. He also advises U.S. companies on the viability of petitioning for antidumping or countervailing duty orders. He joined the firm after serving as an Assistant Chief Counsel at the U.S. Department of Commerce, Office of the Chief Counsel for Trade Enforcement & Compliance. In that role, he provided extensive legal advice on trade enforcement to the Assistant Secretary for Enforcement & Compliance, Deputy Assistant Secretaries, and other Department officials.

  • Represents Doyon, Ltd. before the Department of Commerce in antidumping and countervailing duty investigations of fabricated structural steel from Canada.
  • Represented SK Chemicals before the Department of Commerce in an antidumping investigation of PET resin from Korea.
  • Represented the News Media Alliance before the Department of Commerce in antidumping and countervailing duty investigations of uncoated groundwood paper from Canada.
  • Represented Bombardier before the Department of Commerce in the antidumping and countervailing duty investigations of large civil aircraft from Canada.

Memberships and Affiliations

  • Hispanic National Bar Association
  • Georgetown University Law Center, Adjunct Professor of Law (2003-2010)

Previous Experience

  • Associate in the International Practice Group at an international law firm.
  • Attorney of the Year, Office of the Chief Counsel, Import Administration (2009)
  • Member of Silver Medal Winning Team for Uranium Investigations (2002)
  • Member of Gold Medal Winning Team for Steel Report (2000)