A supporter of Andrew Jackson, Lea was elected to the
U.S. House of Representatives in 1827, defeating fiery anti-Jacksonite
Thomas D. Arnold by a vote of 3,688 to 3,316. He again defeated Arnold in a hotly contested election in 1829, winning 4,713 votes to Arnold's 4,496. Arnold charged Lea with voter fraud, but the House Committee on Elections found no evidence of irregularities, and Lea was allowed to take his seat. He served in the
Twentieth and
Twenty-first congresses, from March 4, 1827, to March 4, 1831. He was narrowly defeated by Arnold for a third term in 1831, 4,935 votes to 4,702. He voted in favor of the
Indian Removal Act of 1830, describing the House debate on the bill as "one of the severest struggles that I have ever witnessed in Congress." He frequently clashed with fellow Tennessee congressman
Davy Crockett, with Crockett calling Lea a "poltroon, a scoundrel, and a puppy," and warning they would fight if they ever crossed paths. In 1830 he gave a speech on a bill to construct a "National Road" from Buffalo, New York to New Orleans. ==Later life==