Yesterday, the Justice Department alleged in a court document that a government contractor that conducts background security investigations for the U.S. government committed fraud for more than four years on more than 650,000 investigations for personnel seeking clearance to access secret classified government information. The company, U.S. Investigations Services (USIS), has been accused of knowingly billing the government for about 40 percent of investigations it conducted during that period despite cutting corners, called “dumping” by the company.