Back in 2007, Reps. Brad Miller (D-N.C.) and James Sensenbrenner (R-Wisc.) sent a letter to the Government Accountability Office (GAO), Congress‘s watchdog over the federal government. As the two top members of the Subcommittee on Investigations and Oversight, the two congressmen were worried that the FBI had been covertly reviving Total Information Awareness, a military research and development data-mining program killed in 2003 because of privacy concerns.