California, 22 other states sue EPA over right to set emissions standards

California and 22 other U.S. states filed suit on Friday to challenge the Trump administration's decision to revoke California's authority to set stiff vehicle tailpipe emissions rules and require a rising number of zero emission vehicles (ZEV). The lawsuit, filed in the U.S. Court of Appeals for the District of Columbia, seeks to overturn the Environmental Protection Agency's decision in September to revoke portions of a waiver it granted in 2013. California Attorney General Xavier Becerra, who is leading the legal challenges, told Reuters in an interview this week that the state would aggressively fight to protect its own legal authority.