The Government Accountability Office issued a report to Congress finding that the Transportation Security Administration's behavioral analysis program, known as "Screening of Passengers by Observation Techniques" (SPOT), is ineffective. The GAO determined that there is no scientifically valid evidence for behavior indicators, and that TSA screeners cannot reliably interpret passenger behavior. The GAO report also notes that the there have been significant concerns over racial and ethnic profiling. There are around 3,000 TSA officers currently assigned to the SPOT program, which has cost approximately $900 million since 2007. The GAO recommended the Congress reduce further funding of the program. In testimony before the 9/11 Commission in 2003, EPIC warned that "It is easy to construct a device that can determine whether a person is carrying a gun before he boards an airplane. It is much more difficult to construct a device that can probe his thoughts and determine his intent to commit a crime." Since that time, EPIC has objected to the DHS's practice of assigning threat profiles based on race, ethnicity, and gender. EPIC has also called upon the TSA to undertake a comprehensive audit of the civil rights impact of airport screening policies on racial and religious minorities. For more information, see EPIC: Passenger Profiling.