A member of Martin Shkreli’s family told a witness not to testify at the former pharmaceutical executive’s fraud trial, a U.S. prosecutor told a judge. “That contact has veered into the territory that has been less than appropriate,” Alixandra Smith said at a hearing in Brooklyn federal court Thursday. Shkreli, the 34-year-old founder of Retrophin Inc. and Turing Pharmaceuticals AG, is accused of defrauding investors in two hedge funds and using $11 million of Retrophin assets to pay them off. He had been dubbed in the media as the "most hated man in America" for raising the price of a...