In his presidential campaign in 1928, Herbert Hoover promised to help impoverished farmers by increasing tariffs on agricultural products; after the election, he also asked Congress to reduce tariffs on industrial goods. In April 1929, well before Black Thursday, U.S. Representative Reed Smoot, a Republican from Utah, introduced a bill that passed the House in May. The bill increased agricultural and industrial tariffs at levels that had not been seen for a century. This was a relatively benign beginning of what would become one of the most tragic policy measures of the 1930s. Within a few months of the bill being passed in the Senate as the Smoot-Hawley Tariff Act, other countries in response raised their own trade barriers, which started a vicious circle of contracting world trade flows and economic activity, and rising unemployment from 1930 to 1933.