The disastrous effects of the Smoot–Hawley tariff proved difficult for Herbert Hoover's 1932 re-election campaign. Franklin D. Roosevelt became the 32nd U.S. president and the Democratic Party worked to reverse trade protectionism in favor of trade liberalization. As an alternative to cutting tariffs across all imports, Democrats advocated for trade reciprocity. The U.S. Congress passed the Reciprocal Trade Agreements Act in 1934, aimed at restoring global trade and reducing unemployment. The legislation expressly authorized President Roosevelt to negotiate bilateral trade agreements and reduce tariffs considerably. If a country agreed to cut tariffs on certain commodities, the U.S. would institute corresponding cuts to promote trade between the two nations. Between 1934 and 1947, the U.S. negotiated 29 such agreements and the average tariff rate decreased by approximately one third during this same period. The legislation contained an important most-favored-nation clause, through which tariffs were equalized to all countries, such that trade agreements would not result in preferential or discriminatory tariff rates with certain countries on any particular import, due to the difficulties and inefficiencies associated with differential tariff rates. The clause effectively generalized tariff reductions from bilateral trade agreements, ultimately reducing worldwide tariff rates.