After teaching for several years at Harvard, Moynihan returned to government as a special adviser to President Nixon. He later served as ambassador to India (1973-75) and to the United Nations (1975-76). He was first elected to the U.S. Senate from New York as a Democrat in 1976 and was reelected three times. Although Moynihan's policy declarations in the 1960s and early 70s were among the most significant formulations of what was called "neoliberalism" or "neoconservatism," in the Senate he was a consistent critic of the Reagan and Bush administrations, which enjoyed the support of many neoconservatives, and a strong supporter of Democratic presidents Carter and Clinton. He chaired the Senate finance committee from 1993 to 1995. He also had a lifelong interest in architecture and did much to retain, restore, and build important structures in New York City and Washington. Moynihan retired from the Senate in 2001; subsequently, he served on the faculty of the Maxwell School of Citizenship and Public Affairs, Syracuse Univ. His many books include Family and Nation (1986), Came the Revolution (1988), On the Law of Nations (1990), and Secrecy (1998).
See biographies by D. Schoen (1979) and G. Hodgson (2000).