Which piece of legislation authored by the legislators pictured here was responsible for a substantial reduction in international trade during the 1930s?

The piece of legislation responsible for a substantial reduction in international trade during the 1930s is the Smoot-Hawley Tariff Act, authored by Senator Reed Smoot and Representative Willis C. Hawley. Enacted in 1930, it raised tariffs on numerous imported goods, leading to retaliatory tariffs from other countries and a significant decline in global trade. This act is often cited as a factor that exacerbated the Great Depression.