He became an attorney in 1969, and was elected to a county council in 1970. Biden was first elected to the Senate in 1972 and became the fifth-youngest senator in U.S. history. He was re-elected to the Senate in 1978, 1984, 1990, 1996, and 2002, and has served for the sixth-longest period among current senators.
Biden is a long-time member and current chairman of the Foreign Relations Committee. His strong advocacy helped bring about U.S. military assistance and intervention during the Bosnian War. He voted in favor of the Iraq War Resolution, but later proposed resolutions to alter U.S. strategy there. He has served as chairman of the Senate Judiciary Committee, dealing with issues related to drug policy, crime prevention, and civil liberties, and led creation of the Violent Crime Control and Law Enforcement Act and Violence Against Women Act. He chaired the Judiciary Committee during the contentious U.S. Supreme Court nominations of Robert Bork and Clarence Thomas.