The U.S. Supreme Court’s overturn of the “Chevron deference” doctrine this morning has major implications for federal policymakers and executive branch agencies, as it does away with the expectation that judges should defer to agencies regarding interpretation of agency powers when legislation (Congress) has been unclear on those powers. It is the most cited case in U.S. administrative law and has been in effect for 40 years, since the Court ruled in Chevron U.S.A. v. Natural Resources Defense Council in 1984.

WSSI will provide updates in our Field Notes newsletter as environmental policy changes unfold.