Fool me once, shame on you. Fool me 665,000 times, well it must be the government. The Justice Department is accusing the United States Investigations Services, the same firm that vetted Edward Snowden, of reaping millions in profits by conducting and submitting at least 665,000 flawed background checks between 2008 and 2012. That number represents roughly 40 percent of total submissions. “USIS management devised and executed a scheme to deliberately circumvent contractually required quality reviews of completed background investigations in order to increase the company’s revenue and profits,” DOJ said in its filing.