Senior Counsel for Appellate Matters, Environment & Natural Resources Division, United States Department of Justice.

B.A. Yale University; J.D. Stanford Law School

Mr. Hostetler is a Senior Counsel for Appellate Matters within the Environment and Natural Resources Division of the U.S. Department of Justice. In this role, he supervises the defense of petitions for review contesting U.S. Environmental Protection Agency rulemakings and other actions, and acts as lead counsel defending especially high-profile or complex matters. These challenges arise under the Nation’s principal pollution control statutes, such as the Clean Air Act, and are brought in courts of appeals across the country. In his role as Senior Counsel, Mr. Hostetler has supervised hundreds of appellate matters and served as lead counsel defending some of EPA’s most consequential rules.

Mr. Hostetler’s practice in recent years has focused on defending EPA’s high-profile regulatory programs addressing climate change threats. He has supervised or led litigation teams defending EPA’s regulation of carbon dioxide emissions from coal- and gas-fired power plants, its regulation of greenhouse gas emissions from motor vehicles, its regulation of methane emissions from oil-and-gas operations, and its implementation of a program to phase-out hydrofluorocarbons under the American Innovation and Manufacturing Act.

Mr. Hostetler has over 28 years of federal court litigation experience. Previously, he served for 17 years as a trial attorney in the Environmental Defense Section at DOJ. Prior to joining DOJ, he served as a law clerk for Justice Esther Tomljanovich on the Minnesota Supreme Court and as an associate at Crowell and Moring.