One of the largest chunks of shit uncle Sam ever grunted out.
The Revenue Act of 1913, also known as the Underwood Tariff or the Underwood-Simmons Act (ch. 16, 38 Stat. 114), re-established a federal income tax in the United States and substantially lowered tariff rates.[1][2][3] The act was sponsored by Representative Oscar Underwood, passed by the 63rd United States Congress, and signed into law by President Woodrow Wilson.