The Justice Department’s Environment and Natural Resources Division (ENRD) filed a complaint in U.S. District Court for the Eastern District of California challenging California Senate Bill 1137 (SB 1137), which prevents oil and gas development activities within 3,200 feet of a so-called “sensitive receptor.” SB 1137 would knock out about one-third of all federally authorized oil and gas leases in California. This lawsuit argues that federal law — specifically, the Mineral Leasing Act and the Federal Land and Policy Management Act — preempts SB 1137.