The State Department is coming under new scrutiny for outsourcing to private firms the task of investigating other private contractors for criminal activity in Iraq. ABC News reports the Bureau of Diplomatic Security is now relying on a company called US Investigations Services (USIS) to handle the bulk of its probes. The most controversial investigation surrounds the killings of seventeen Iraqi civilians by employees of the military firm Blackwater Worldwide in Baghdad’s Nisoor Square. The one-year anniversary of the Nisoor Square massacre passed last month with not a single criminal charge to date. According to ABC News, eight USIS employees comprise the majority of the Federal Investigations Unit, the government body formed to probe contractor crimes.