From the USDOJ OIG web page:
The US Department of Justice – Office of Inspector General
The Office of the Inspector General (OIG) conducts independent investigations, audits, inspections, and special reviews of United States Department of Justice personnel and programs to detect and deter waste, fraud, abuse, and misconduct, and to promote integrity, economy, efficiency, and effectiveness in Department of Justice operations.
http://www.justice.gov/oig/reports/ATF/e1101.pdf
Review of ATF’s Project Gunrunner, Evaluation and Inspections Report I-2011-001, November 2010
Excerpt:
“We also found that while reports of multiple sales of handguns produce timely, actionable investigative leads for ATF, the lack of a reporting requirement for multiple sales of long guns – which have become the cartels’ weapons of choice – hinders ATF’s ability to disrupt the flow of illegal weapons into Mexico.”
and...The head of the Justice Department:
Eric H. Holder, Jr.
Attorney General of the United States