DHS Privacy Office Report on MATRIX
The Privacy Office of the Department of Homeland Security has issued a report on MATRIX: The Multistate Anti-Terrorism Information Exchange. MATRIX is a now-defunct data mining and data sharing program among federal, state, and local law enforcement agencies, one of the many data-mining programs going on in government (TIA -- Total Information Awareness -- being the most famous, and Tangram being the newest).
The report is short, and very critical of the program's inattention to privacy and lack of transparency. That's probably it was released to the public just before Christmas, burying it in the media.