Isaac Siegel was a Jewish Congressman from New York State.
Born in New York City April 12, 1880, Siegel attended the public schools and pursued a supplementary course of study in New York City. He graduated from New York University Law School in 1901, was admitted to the bar May 26, 1902, and commenced practice in New York City.
Siegel was appointed special deputy attorney general for the prosecution of election frauds in 1909 and 1910 and in 1915 he was elected as a Republican to the Sixty-fourth Congress. He was also elected to the three succeeding congresses as well, serving from March 1915 to March 1923. Siegel served as chairman of the House Committee on the Census during Sixty-sixth and Sixty-seventh Congresses.
During the First World War, Siegel was a member of the overseas commission which visited France and Italy during July and August 1918; delegate to the Republican National Conventions in 1916, 1920, 1924, and 1936; resumed the practice of law; appointed as a magistrate of New York City on July 4, 1939, and served until September 14, 1940, when he was appointed to the bench; justice of the domestic relations court of New York City until his death in that city on June 29, 1947; interment in Field Cemetery, Brooklyn, N.Y.