The Seventh Circuit Act of 1807 (formally, "An Act establishing Circuit Courts, and abridging the jurisdiction of the district courts in the districts of Kentucky, Tennessee and Ohio", 2 Stat. 420; 9th Congress, ch. 16; enacted February 24, 1807) was a federal statute which increased the size of the Supreme Court of the United States from six Justices to seven, and which also reorganized the circuit courts of the federal judiciary.[1] The Act became law on February 24, 1807, during the Jefferson administration.