*Party division totals are based on election day results.
Missouri statehood continued to monopolize the energies of the 16th Congress (1819–1821). The first session hammered out the Missouri Compromise that admitted Missouri as a slave state, Maine as a free state, and codified Missouri’s southern boundary as the designating line between free and slave territories. In the second session, Henry Clay of Kentucky put the final touches on the Missouri Compromise after he convinced the territory’s officials to remove an offending clause in Missouri’s constitution which would have excluded all African Americans—whether slave or free—from residing in the state.
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To view complete lists of individuals who have served in these leadership and official positions since the 1st Congress, visit the People section
1Resigned on October 28, 1820.