William P. Horn

William P. Horn is of counsel with Birch Horton Bittner & Cherot and practices environmental and natural resources law. His work includes public land transactions, land valuation, wildlife law, and regulatory matters involving federal land management. He advises on national park concessions, Forest Service requirements, recreation permits, and statutes governing protected species. His practice connects legal disputes with the government decisions that determine how land and natural resources may be used.

William earned a B.A. with honors from American University in 1972 and a J.D. from American University Washington College of Law in 1983. He is admitted in the District of Columbia and before several federal appellate courts, the U.S. Supreme Court, and the U.S. Court of Federal Claims. His academic training and federal practice support work that frequently involves the interaction of legislation, agency action, and litigation.

William has handled complex land exchanges, including the Arizona Indian School and Florida Everglades exchange, described as the largest interstate land exchange completed at the time. He represents clients in federal district and appellate courts on matters involving endangered species, public lands, and environmental review. His legislative work also involves congressional committees responsible for natural resources and appropriations, where he has helped advance statutory provisions and legislative directives.

William P. Horn previously served as an Assistant Secretary and Deputy Undersecretary at the U.S. Department of the Interior. He has received an Outstanding Service Award from the department and an advocacy award from the International Academy of Trial Lawyers. He speaks at national conferences and has held leadership positions with conservation organizations. His experience spans government decision-making, federal litigation, legislative advocacy, and land management policy.

Law Office Affiliations

• Of Counsel, Birch Horton Bittner & Cherot
• Member, District of Columbia Bar
• Chairman, National Wildlife Refuge Centennial Commission
• Vice Chairman, Bonefish Tarpon Trust
• President, Friends of the Teton River
• President, Falling Spring Greenway, Inc.
• Board Member, Trout Unlimited
• Member, National Academy of Sciences, Board on Environment Studies and Toxicology
• Member, National Academy of Sciences, Committee on the Independent Scientific Review of Everglades Restoration Progress

Licensed State

• District of Columbia

Education

• American University, Washington College of Law
  Juris Doctor (JD)
• American University
  Bachelor of Arts (BA)

Awards & Badges