Harrison and the Republican-controlled 51st United States Congress (derided by opponents as the 'Billion Dollar Congress') enacted the most ambitious domestic agenda of the late-nineteenth century. Hallmarks of his administration include the McKinley Tariff, which imposed historic protective trade rates, and the Sherman Antitrust Act, which empowered the federal government to investigate and prosecute trusts. Due in large part to surplus revenues from the tariffs, federal spending reached one billion dollars for the first time during his term. Harrison facilitated the creation of the National Forests through an amendment to the General Revision Act (1891), and substantially strengthened and modernized the United States Navy. He proposed, in vain, federal education funding as well as voting rights enforcement for African Americans in the South. Harrison's presidency saw the addition of six new states, more than any other president. In foreign affairs, Harrison vigorously promoted American exports, sought tariff reciprocity in Latin America, and worked to increase U.S. influence across the Pacific.