The 101st United States Congress was a meeting of the legislative branch of the United States federal government, composed of the United States Senate and the United States House of Representatives. It met in Washington, DC from January 3, 1989, to January 3, 1991, during the final weeks of the administration of U.S. President Ronald Reagan and the first two years of the administration of U.S. President George H. W. Bush. The apportionment of seats in this House of Representatives was based on the Twentieth Census of the United States in 1980. Both chambers maintained a Democratic majority.