On March 31, U.S. District Judge Christine Arguello found that the Federal Power Act (FPA) is the exclusive authority with regards to controversies related to Federal Energy Regulatory Commission (FERC) -issued hydroelectric licenses, including challenges that stem from the permitting decisions of other federal agencies acting under their independent statutory authority. In Save the Colorado v. Semonite, Civil Action No. 18-cv-03258 (D. Colo. Mar. 31, 2021), the court ruled that it lacked jurisdiction over an appeal of a U.S. Army Corps of Engineers (USACE) Clean Water Act (CWA) Section 404 permit and the associated U.S. Fish and Wildlife Service (USFWS) Endangered Species Act (ESA) biological opinion since these are actions “inhere[d] in the controversy” related to the FERC license.