http://www.ncjrs.org/pdffiles1/nij/191332.pdf
"The third report in NIJ's Reducing Gun Violence series evaluates an innovative police program that used community-based sources to identify homes where juveniles might be harboring guns. Police then sought parental permission to search for and confiscate illegal guns. A nationally recognized success in its first year, the Consent-to-Search program subsequently experienced serious implementation problems. This report (NCJ 191332) describes the program's setbacks and implications for community policing. "
