DNDO has come under heavy criticism for its failed Advanced Spectroscopic Portal Monitor (ASP) and Cargo Advanced Automated Radiography System (CAARS) programs. The
U.S. Senate Committee on Homeland Security and Government Affairs has accused DNDO of wasting 5 years and millions of dollars. As of June 30, 2010, DNDO had spent $200 million trying to develop a new radiation detection technology – the ASP - that the
Government Accountability Office (GAO) has concluded is only marginally better than existing technology. The ASP may have drained resources from other programs, including development and deployment of mobile, portable or hand-held technologies that could screen other types of inbound cargo or bulk shipments, like international trains and commercial aviation. == Accusations of Misleading Congress ==