U.S. Customs and Border Protection (CBP) is responsible for regulating and facilitating international trade, collecting import duties, and enforcing regulations, including those related to trade, customs, and immigration. CBP’s Advanced Training Center in Harpers Ferry, West Virginia, provides advanced law enforcement training to CBP personnel. We performed this audit to determine whether CBP provided effective oversight and managed the fourth phase of the Advanced Training Center acquisition in accordance with Federal, departmental, and Component requirements. CBP did not effectively oversee and manage the fourth phase of the Advanced Training Center acquisition. The $55.7 million Interagency Agreement between CBP and its Economy Act service provider, the U.S. Army Corps of Engineers, was not developed and executed according to ederal, departmental, and Component requirements.