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John Bingham
John Armor Bingham (January 21, 1815 – March 19, 1900) was an American politician who served as a Republican representative from Ohio and as the United States ambassador to Japan. In his time as a congressman, Bingham served as both assistant Judge Advocate General in the trial of the Abraham Lincoln assassination and a House manager (prosecutor) in the impeachment trial of U.S. President Andrew Johnson. He was also the principal framer of the Fourteenth Amendment to the United States Constitution.
Source: Wikipedia