The 71st United States Congress was a meeting of the legislature of the United States federal government, consisting of the United States Senate and the United States House of Representatives. It met in Washington, D.C. from March 4, 1929, to March 4, 1931, during the first two years of Herbert Hoover's presidency. The apportionment of seats in the House of Representatives was based on the 1910 United States census.

The 72nd United States Congress was a meeting of the legislative branch of the United States federal government, consisting of the United States Senate and the United States House of Representatives. It met in Washington, D.C. from March 4, 1931, to March 4, 1933, during the last two years of Herbert Hoover's presidency. The apportionment of seats in this House of Representatives was based on the 1910 United States census. The Senate had a Republican majority. The House started with a very slim Republican majority, but by the time it first met in December 1931, the Democrats had gained a majority through special elections.