weaktwos | Halliburton

According to this article in Salon.com, the Pentagon is launching a criminal investigation on Halliburton regarding its practices with purchasing. An ex employee who did requisitions for Halliburton over there has come forward and testified to the Government about Halliburton's cost-plus contracting. I wonder why our Government agreed to such a contract that would encourage Halliburton not to seek the best bids for products?