John H. Sununu is an American politician and former governor of New Hampshire. He served as the state's 75th governor from 1983 to 1989. Sununu is a member of the Republican Party and was known for his fiscal conservatism and efforts to reduce state spending during his tenure. After his time as governor, Sununu served in the U.S. House of Representatives from 1995 to 1999. He is also recognized for his role as the White House Chief of Staff under President George H.W. Bush from 1989 to 1991, where he was influential in shaping policy decisions.