John Cornyn III (born February 2, 1952) is an American politician and attorney serving as the senior United States Senator for Texas since 2002.
He was the Republican Senate Majority Whip for the 114th and 115th Congresses.
Cornyn also previously served as Chair of the National Republican Senatorial Committee from 2007 to 2011.Born in Houston, Cornyn is a graduate of Trinity University and St.
Mary's University School of Law, and received an LL.M.
degree from the University of Virginia School of Law.
He was a judge on Texas' 37th District Court from 1985 to 1991, when he was elected an associate justice of the Texas Supreme Court, where he served from 1991 to 1997.
In 1998 Cornyn was elected Attorney General of Texas, serving one term until winning a seat in the U.S.
Senate in 2002.
He was reelected to a second term in 2008 and to a third term in 2014.