The Sixty-Fourth Congress of the United States convened from March 4, 1915, to March 4, 1917. It was composed of the Senate and the House of Representatives, with a total of 96 senators and 435 representatives. This Congress was notable for addressing issues related to World War I and domestic reforms. During this period, significant legislation was passed, including the Federal Highway Act and the Keating-Owen Child Labor Act. The Congress also dealt with the growing influence of the Progressive Movement, which aimed to address social issues and improve government efficiency.