Drug Control: Better Coordination with the Department of Homeland Security and an Updated Accountability Framework Can Further Enhance DEA’s Efforts to Meet Post-9/11 Responsibilities. Washington, D.C.: GAO, 2009.
Drug Control: Efforts to Develop Alternatives to Cultivating Illicit Crops in Colombia Have Made Little Progress and Face Serious Obstacles In GAO-02-291. Washington, D.C.: GAO, 2002.
Plan Colombia: Drug Reduction Goals Were Not Fully Met, but Security Has Improved; U.S. Agencies Need More Detailed Plans for Reducing Assistance. Washington, D.C.: GAO, 2008.
Afghanistan: Key Issues for Congressional Oversight. Washington, D.C.: GAO, 2009.