BOSTON — A federal jury in Boston began deliberating Tuesday morning in a mob murder trial, following weeks of testimony about the death of a Providence native.The jury will consider evidence that prosecutors say proves ex-mob boss Francis P. "Cadillac Frank" Salemme and Paul Weadick are responsible for the death of Steven DiSarro, a 43-year-old nightclub owner, husband and father of five.Prosecutors say Salemme, then the boss of the New England La Cosa Nostra, [...]