On the home front, Wilson raised income taxes, set up the War Industries Board, promoted labor union cooperation, regulated agriculture and food production through the Lever Act, and nationalized the nation's railroad system. In his 1915 State of the Union, Wilson asked Congress for what became the Espionage Act of 1917 and the Sedition Act of 1918, suppressing anti-draft activists. The bill also instituted a tax on personal income above $4,000. Passage of Underwood's tariff bill in the Senate would prove more difficult than in the House, partially because some Southern and Western Democrats favored the continued protection of the wool and sugar industries, and partially because Democrats had a narrower majority in that chamber. Seeking to marshal support for the tariff bill, PresidentWilson met extensively with Democratic senators and appealed directly to the people through the press. Wilson felt Prohibition was unenforceable, but his veto of the Volstead Act was overridden by Congress.