Ms. Brown Weiss, a US national, was appointed to the Inspection Panel in 2002, and served as Chair from 2003 to 2007.

Ms. Brown Weiss has been a board member, trustee, and legal advisor for a number of environmental commissions and councils, and she sat on the Board of some. She is an elected member of the American Law Institute, the Council on Foreign Relations, and the IUCN Commission on Environmental Law. She served as President of the American Society of International Law, and she was Associate General Counsel for the U.S. Environmental Protection Agency, where she established the Division of International Law.

Ms. Brown Weiss has taught and published widely on issues of international law and global policies, including environmental and compliance issues. She is the Francis Cabell Brown Professor of International Law at Georgetown University Law Center, where she has been on the faculty since 1978, and has directed international multi-disciplinary research projects. She taught at Princeton University. Ms. Brown Weiss has won many prizes for her work, books and articles. She sits on several editorial boards, including the American Journal of International Law and the Journal of International Economic Law. She received a BA from Stanford University, and she holds a LL.B. (J.D.) from Harvard Law School, and a Ph.D. in Political Science from the University of California at Berkeley. She has an Honorary Doctor of Laws degree from Chicago-Kent College of Law.