U.S. President <a href="https://en.wikipedia.org/wiki/Herbert_Hoover" id="mw1w" rel="mw:WikiLink" title="Herbert Hoover">Herbert Hoover</a> signs the <a href="https://en.wikipedia.org/wiki/Smoot–Hawley_Tariff_Act" id="mw2A" rel="mw:WikiLink" title="Smoot–Hawley Tariff Act">Smoot–Hawley Tariff Act</a> into law.