CHICAGO (Reuters) - A U.S. jury on Friday found former media mogul Conrad Black guilty of multiple counts of criminal fraud and a single count of obstruction of justice but acquitted him of racketeering and tax charges. The 62-year-old Canadian-born member of Britain's House of Lords could face up to 35 years in prison and millions of dollars in fines and forfeitures. Black was found guilty of three mail fraud counts and one charge of obstruction of justice out of the 13 counts against him. He and three others in the trial were acquitted of failing to file corporate tax...