sovereign authority; endangered species act

Arizona's HB 2161 prohibits state agencies, including the Arizona Game and Fish Department, from using state funds or personnel to enforce the federal Endangered Species Act (ESA) or its incidental take permit program. The law specifically exempts the state's livestock loss program administered by the Arizona Livestock Loss Board. It is based on Arizona's constitutional authority (Article II, Section 3) to resist federal mandates that would require state resource use. The bill does not affect federal enforcement of the ESA but prevents Arizona from collaborating with or funding its implementation.