Government Relations

Tom Sansonetti is a longtime litigator and project team leader who joined Holland & Hart in 1993 and built a nationally recognized practice in natural resources and environmental law. Considered an expert in natural resources and environmental matters, Tom served as an Assistant Attorney General for the Environment and Natural Resources Division in the Department of Justice and also as the Solicitor at the Department of the Interior. He has argued before the U.S. Supreme Court and in six Federal Circuit Courts of Appeal, and served as a federal prosecutor in environmental crimes cases. Tom’s appellate experience highlights his ability to argue cases at all levels of the federal court system.

His experience in energy and natural resources law is extensive, including:

  • Clean Air Act and Clean Water Act issues

  • Development of renewable energy projects, including geothermal, solar, and wind projects

  • Endangered Species Act

  • Oil and natural gas permitting

  • Permitting of oil and natural gas pipelines and electric transmission, including right-of-ways

  • Public lands management

  • Water rights

Active in politics, Mr. Sansonetti was the Chief of Staff and Legislative Director for Wyoming Congressman Craig Thomas during the 101st Congress and was appointed Associate Solicitor for Energy and Resources by Interior Secretary Don Hodel during the last two years of the Reagan administration. ​