"One bill related to Medi-Cal created a gateway for considerable fraud, which an organized crime syndicate in his district seized upon, perpetuating the largest Medicaid fraud case in history at the time. California business leaders warned Schiff about the fraud they were witnessing, but he appears to have ignored it," Schweizer writes. "In 2010, four hundred FBI agents executed a massive investigation and arrested seventy Armenian mobsters. The criminals ran 118 phantom clinics, many of them in Schiff's district. The ringleader, Armen Kazarian, lived in Schiff's district."