February 3, 1913 and December 23, 1913

The Exact Dates of the BEGINNING of the END of the Constitution of the United States

December 23, 1913
On December 23, 1913, President Woodrow Wilson signed the Federal Reserve Act into law. The act created a Federal Reserve System, comprised of a Federal Reserve Board, twelve regional reserve banks, and the underpinnings of a smooth central banking system.

16th Amendment
Income Tax Form, 1913. Record Group 56, General Records of the Department of the Treasury, Entry 357A, Internal Revenue Division, Income Tax Forms. Passed by Congress on July 2, 1909, and ratified February 3, 1913, the 16th amendment established Congress's right to impose a Federal income tax