In the wake of the 2005 hurricanes in the Gulf Region, GAO and the Department of Homeland Security Office of Inspector General (DHS OIG) initiated a number of audits and investigations addressing the federal government's response to those events. On July 19, 2006, GAO testified on the results of its purchase card work. This report summarizes the testimony and provides recommendations. Department of Homeland Security (DHS) cardholders made thousands of transactions related to hurricane relief operations. GAO analyzed transactions between June and November of 2005 to determine if (1) DHS's control environment and management of purchase card usage were effective; (2) DHS's key internal control activities operated effectively and provided reasonable assurance that purchase cards were used appropriately; and (3) potentially fraudulent, improper, and abusive purchase card activity existed at DHS.