Robert R. Nordhaus was the Federal Energy Regulatory Commission's (FERC) first General Counsel, and later served as General Counsel for the Department of Energy during the Clinton Administration. From 1963 to 1974, he was Assistant Counsel in the Legislative Counsel's Office of the US House of Representatives, where he assisted in drafting many of the nation's prominent legislative programs, including the 1970 Clean Air Act. He was also an adjunct faculty member at George Washington Law School and Georgetown University Law Center. Sam Kalen is the Centennial Distinguished Professor of Law at the University of Wyoming College of Law, as well as the founder and co-director of the Center for Law and Energy Resources in the Rockies, at the University of Wyoming. He is the author of numerous law review articles, and co-author of Basic Practice Series: ESA (Endangered Species Act) (2012) and Natural Resources Law and Policy (2016).