After serving as an officer in the
United States Air Force, he spent three years prosecuting narcotics cases as an Assistant
United States Attorney for the Southern District of New York. Curran was a member of the
New York State Assembly from 1963 to 1966, sitting in the
174th,
175th and
176th New York State Legislatures. On December 23, 1966, he was appointed by Mayor
John V. Lindsay to help in the passing of laws concerning New York City by the State Legislature. He resigned from the State Assembly to take up the post with the Lindsay administration. Governor
Nelson Rockefeller appointed Curran to the New York State Commission of Investigation in 1968, elevating him to chairman the following year. Under his leadership, and despite the body's lack of authority to prosecute crimes they had uncovered, the Commission exposed kickbacks and fraud in
Buffalo and Albany. He was appointed by President
Richard Nixon as U.S. Attorney for the Southern District of New York in 1973. He remained in office until 1975, obtaining convictions of
Carmine Tramunti, the head of the
Lucchese crime family, and Representative
Bertram L. Podell. He obtained an indictment against nursing home operator
Bernard Bergman, that later led to a guilty plea in a $1.2 million Medicaid fraud case. He was a consultant to the
Pentagon on intelligence matters in 1976. ==Special counsel==