The Expatriation Act of 1907 (59th Congress, 2nd session, chapter 2534, enacted March 2, 1907) was an act of the 59th United States Congress concerning United States nationality law and renunciation of citizenship. It effectively functioned as Congressional endorsement of the various ad hoc rulings on loss of United States nationality that had been made by the State Department since the passage of the Expatriation Act of 1868. Some sections of it were repealed by other acts in the early 1920s; those sections which remained were codified at 8 U.S.C. §§ 6–17, but those too were repealed by the Nationality Act of 1940.