The scale of the private contract business and the sums involved have prompted calls for greater scrutiny.
"I believe we need to create a special committee in the US Senate to exercise oversight over contracting abuses related to reconstruction and the wars in Iraq and Afghanistan," said Senator Byron Dorgan recently.
He wants a panel similar to one set up by Senator Harry Truman in 1941 during the build-up to WWII.
"The Truman Committee held 60 hearings on waste, fraud and abuse," Mr Dorgan said. "It's unfathomable to me that we don't have a bipartisan investigative committee on contracting in Iraq."



