RICHMOND, Va. (AP) _ Virginia Gov. Ralph Northam has again vetoed a bill aimed at preventing so-called “sanctuary cities” in the state.  Northam, a Democrat, said he was vetoing the legislation Tuesday because it imposes an unneeded burden on local law enforcement officials and “sends a chilling message.”  It was the same statement he issued last year when he vetoed the same legislation. A sanctuary city is a term without legal definition but generally means a locality that limits cooperation with federal immigration enforcement activities. Republicans said the legislation is needed to ensure federal immigration efforts aren’t hampered. The bill narrowly passed the GOP-led General Assembly along party lines. Northam also vetoed legislation requiring local law enforcement officials to notify federal officials when a person living in the country illegally is released from jail.