• U.S. Representative from Tennessee: Served from 1797 to 1801. • Governor of the Mississippi Territory: Appointed by President Thomas Jefferson from 1801 to 1803. • Territorial Governor of Orleans: Served from 1803 to 1812 after helping oversee the transfer of the Louisiana Purchase from France to the United States. • First Governor of Louisiana: Served from April 30, 1812, to December 16, 1816, following Louisiana's admission to the Union. • U.S. Senator from Louisiana: Elected to the Senate in 1817, serving for a brief period until his death on November 23, 1817.