D. Smoot-Hawley Tariffs was NOT a way in which the federal government tried to impact the economy during the war and combat inflation. The Smoot-Hawley Tariffs were passed in 1930 and were aimed at protecting American industries from foreign competition, but they are widely considered to have worsened the Great Depression. By the time the U.S. entered World War II, the government had shifted its focus to policies aimed at stimulating the economy and supporting the war effort.