Robert Phillips Corker Jr. (born August 24, 1952) is an American businessman and politician who served as a United States Senator from Tennessee from 2007 to 2019. A member of the Republican Party, he served as Chair of the Senate Foreign Relations Committee from 2015 to 2019.In 1978, Corker founded a construction company, which he sold in 1990. This increased his net worth to $45 million. He ran in the 1994 United States Senate election in Tennessee but was defeated in the Republican primary by Bill Frist. Appointed by Governor Don Sundquist, Corker served as Commissioner of Finance and Administration for the State of Tennessee from 1995 to 1996, preceded by David Manning and succeeded by John Ferguson. He later acquired two of the largest real estate companies in Chattanooga, Tennessee, before being elected the 71st Mayor of Chattanooga in March 2001; he served one term (2001–2005). Corker announced his candidacy for the 2006 United States Senate election in Tennessee after Frist announced his retirement. Corker narrowly defeated Democratic U.S. Representative Harold Ford Jr. in the general election, with 51% of the vote. In 2012 Corker was reelected, defeating Democrat Mark E. Clayton, 65% to 30%. On September 26, 2017, Corker announced that he would not seek reelection in 2018; fellow Republican U.S. Representative Marsha Blackburn was elected to succeed him.