The U.S. government has filed a court briefing declaring former Mexican President Ernesto Zedillo enjoys immunity from a Connecticut civil suit for alleged war crimes. The suit accuses Zedillo of responsibility for a 1997 massacre in the Chiapas village of Acteal when government-backed paramilitary groups killed 45 people as part of an attempt to quash the Zapatista popular uprising. Zedillo now lives in Connecticut and teaches at Yale University. Lawyers for the plaintiffs say they will be forced to drop the case as a result of Zedillo’s immunity.