On January 16, 2003, Senator Russ Feingold introduced legislation to suspend the activity of the IAO and the Total Information Awareness program pending a Congressional review of privacy issues involved.[8] A similar measure introduced by Senator Ron Wyden would have prohibited the IAO from operating within the United States unless specifically authorized to do so by Congress, and would have shut the IAO down entirely 60 days after passage unless either the Pentagon prepared a report to Congress assessing the impact of IAO activities on individual privacy and civil liberties or the President certified the program's research as vital to national security interests. In February 2003, Congress passed legislation suspending activities of the IAO pending a Congressional report of the office's activities (Consolidated Appropriations Resolution, 2003, No.108–7, Division M, §111(b) [signed Feb. 20, 2003]).
In response to this legislation, DARPA provided Congress on May 20, 2003 with a report on its activities.[9] In this report, IAO changed the name of the program to the Terrorism Information Awareness Program and emphasized that the program was not designed to compile dossiers on US citizens, but rather to research and develop the tools that would allow authorized agencies to gather information on terrorist networks. Despite the name change and these assurances, the critics continued to see the system as prone to potential misuse or abuse.
As a result House and Senate negotiators moved to prohibit further funding for the TIA program by adding provisions to the Department of Defense Appropriations Act, 2004[10] (signed into law by President Bush on October 1, 2003). Further, the Joint Explanatory Statement included in the conference committee report specifically directed that the IAO as program manager for TIA be terminated immediately.[11]