Levy (still going by that surname) was elected in 1841 as the
delegate from the Florida Territory to the
United States House of Representatives and served four years. He was seated after his election, but his position was disputed, as opponents argued that he was not a citizen. Levy agreed to suspend his legislative activities pending resolution of this issue in the next Congressional session. By late March 1842 the associated investigations, committee votes, and attempts to bring the issue to a vote in the full House, which included a defense by Levy and testimony from witnesses favorable to him, had not produced a definitive opinion of the House. Levy was allowed to take his seat, and no further attempts were made to contest his claim to it. Once seated in the House, Levy worked to gain statehood for the territory and to protect the expansion of slavery in other newly admitted states. In 1845, after Florida was admitted as a state, the legislature elected Levy as a
Democrat as its first U.S. Representative, but he did not take his seat and was subsequently elected to the United States Senate, the first Jew in the United States to win a seat in the Senate. He served until 1851 (during which period he began using Yulee as his surname). During his first Senate term, he served as chairman of the
United States Senate Committee on Private Land Claims (1845–1849) and the
United States Senate Committee on Naval Affairs (1849–1851). In 1855, Yulee was again elected by the Florida legislature to the Senate. He served until resigning in 1861 to support the
Confederacy at the start of the
American Civil War. Yulee's inflammatory pro-slavery rhetoric in the Senate earned him the nickname "Florida
Fire-Eater". Although he frequently denied that he favored secession, Yulee and his colleague, Senator
Stephen Mallory, jointly requested from the
War Department a statement of munitions and equipment in Florida forts on January 2, 1860. He wrote to a friend in the state, "the immediately important thing to be done is the occupation of the forts and arsenals in Florida." ==Civil War==