The 70th Congress of the United States convened from March 4, 1927, to March 4, 1929. It was composed of the Senate and the House of Representatives, with the Republican Party holding a majority in both chambers. This Congress was notable for addressing issues related to the economy and infrastructure, including the development of the Boulder Dam. During this session, significant legislation was passed, including the Revenue Act of 1928, which aimed to reduce taxes. The Congress also dealt with various social issues, reflecting the changing dynamics of American society in the late 1920s.