If you are referring to Sen. Robert Menendez of New Jersey who was sworn in as a Senator in January 2006, then he was a Congressman for the 13th congressional district for New Jersey when he was sworn in as Senator.
Sen. Menendez is a career politician who has served as a Mayor for Union City, a Representative in New Jersey's General Assembly, the New Jersey Senate and the United States House of Representatives, a position he won in 1993, was re-elected in, and then left to become Senator.
