Leaders in the U.S. capital, Washington, D.C., were surprised and delighted by Diem’s success. American military and economic aid continued to pour into South Vietnam while American military and police advisers helped train and equip Diem’s army and security forces. Beneath the outward success of the Diem regime, however, lay fatal problems. Diem was a poor administrator who refused to delegate authority, and he was pathologically suspicious of anyone who was not a member of his family. His brother and close confidant, Ngo Dinh Nhu, controlled an extensive system of extortion, payoffs, and influence peddling through a secret network called the Can Lao, which had clandestine members in all government bureaus and military units as well as schools, newspapers, and businesses. In the countryside, ambitious programs of social and economic reform had been allowed to languish while many local officials and police engaged in extortion, bribery, and theft of government property. That many of these officials were, like Diem himself, northerners and Roman Catholics further alienated them from the local people.