Democratic Party politician who served from 1965 until 1971 as a United States Representative from California's thirty-eighth district. Subsequently, he held a six-year term as a United States Senator. While in the Senate, he penned a piece of anti-trust legislation known as the Tunney Act.
After earning his bachelor's degree from Yale University, he entered the University of Virginia School of Law. He subsequently joined a New York City-based legal practice.
In the early 1960s, he served in the United States Air Force.
He was born in New York City to Polly Lauder Tunney and professional boxer Gene Tunney. His first marriage to Mieke Sprengers, resulted in three children; he later wed Kathinka Osborne in 1977.
He and fellow Democratic politician Ted Kennedy were roommates at the University of Virginia.