*Party division totals are based on election day results.
Republicans swept the 1904 elections, increasing their control of the House while retaining their hold on the Senate and White House. The 59th Congress (1905–1907) tackled a variety of reforms. It granted the Interstate Commerce Commission railroad enforcement powers; charged the Agriculture Department with inspecting meat-packing facilities; passed the Pure Food and Drug Act; and prohibited corporations from contributing to political campaigns. Congress also established the Bureau of Immigration and Naturalization, passed legislation to limit contract laborers, and created new regulations for issuing U.S. passports.