The 58th Congress of the United States convened from March 4, 1903, to March 4, 1905. It consisted of the Senate and the House of Representatives, with significant events including the passage of the Elkins Act, which aimed to curb railroad rate discrimination. This Congress was marked by the growing influence of the Progressive Movement, which sought reforms in various sectors. During the 58th Congress, notable figures included President Theodore Roosevelt, who advocated for progressive reforms and conservation efforts. The Congress also addressed issues such as labor rights and economic regulation, reflecting the changing social landscape of the early 20th century.