Drew C. Ensign

Drew Ensign is counsel in the Washington, D.C. office. He is a member of the Litigation & Trial and Environment, Land & Resources Departments.

Mr. Ensign advises clients on environmental, appellate, and administrative law matters, with a particular focus on the National Environmental Policy Act (NEPA), the Endangered Species Act (ESA), genetically engineered (GE) crops, and energy and power matters. Mr. Ensign has represented clients in cases before a wide variety of federal and state courts, including successful US Supreme Court merits cases and more than a dozen federal appeals.

Mr. Ensign’s representations include successful petitions for certiorari and merits victories in Entergy Corp. v. Riverkeeper, Inc., 556 US 208 (2009), involving Clean Water Act regulations on power plants and Monsanto Co. v. Geertson Seed Farms, 561 US 139 (2010), involving regulation of GE alfalfa. Mr. Ensign also represented biotechnology clients for landmark victories in Center for Food Safety v. Vilsack, 718 F.3d 829 (9th Cir. 2013), successfully defending USDA’s approval of GE alfalfa and its programmatic approach to ESA compliance, Center for Food Safety v. Vilsack, 636 F.3d 1166 (9th Cir. 2011), obtaining a reversal of an injunction requiring destruction of GE sugarbeet crops accounting for approximately 25 percent of the domestic sugar supply, and Bowman v. Monsanto Co., 133 S. Ct. 1761 (2013), involving the scope of patent protection for GE crops. Mr. Ensign has also represented veterans and veterans organizations and successfully argued an appeal before the Federal Circuit on behalf of a World War II veteran, securing a victory in under 48 hours.

Mr. Ensign also has experience in various federal and state courts on a wide-range of topics. He is recognized as a “Rising Star” in the 2014 and 2015 Washington, D.C. Super Lawyers lists.

Prior to joining Latham & Watkins, Mr. Ensign served as judicial clerk to Judge J. Clifford Wallace of the US Court of Appeals for the Ninth Circuit.

Mr. Ensign is admitted to practice in the District of Columbia, Arizona, and California, the US Supreme Court, the Courts of Appeals for the D.C., Ninth, and Eleventh Circuits, and several federal district courts.