The U.S. Department of Justice said Wednesday that it had charged 30 people allegedly linked with a decade-long insider trading scheme involving high-profile law firms. According to two complaints unsealed on Wednesday, the group stole and used confidential information on 30 mergers and acquisitions deals, netting tens of millions of dollars in illicit profits. Defendants were scattered across the U.S., including in New York , New Jersey , and California , as well as in Israel and Russia.