LOS ANGELES (AP) - A former FBI informant once suspected of being a Chinese double agent has agreed to plead guilty to lying to federal agents and to a tax charge, U.S. law enforcement officials said Friday. Katrina Leung, a wealthy socialite from San Marino, Calif., was expected to enter a plea Friday in U.S. District Court in Los Angeles. She would serve no jail time under an agreement reached with federal prosecutors, one official told The Associated Press in Washington, D.C. The officials spoke on condition of anonymity because the agreement had yet to be presented to a federal...