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The Hofstadter Committee, also known as the Seabury investigations, was a joint legislative committee formed by the New York State Legislature to probe into corruption in New York City, especially the magistrate's courts and police department in 1931. It led to major changes in the method of arrest, bail and litigation of suspects in New York City.
The commission was chaired by State Senator Samuel H. Hofstadter. The actual investigation was conducted by Ex-Judge of the Court of Appeals Samuel Seabury who was appointed legal counsel to the committee.
The commission heard testimony from a thousand citizens, policemen, judges, lawyers and defendants about unjust treatment before the law. Prompted by allegations of corruption in police and court systems.
The Seabury investigation into the Magistrate’s Courts exposed the conspiracy of judges, attorneys, police and bail bondsmen to extort money from defendants facing trial.
The Magistrate’s Court of the City of New York was the Court in which those people charged with certain crimes first encountered the justice system. Throughout the autumn of 1930, the Seabury Commission heard more than 1,000 witnesses — judges, lawyers, police officers and former defendants — describe a pattern of false arrests, fraudulent bail bonds, and imprisonment.
Many people — often women, always working class — who were charged with crimes in the Magistrate’s Court were totally innocent of wrongdoing, “framed” in police parlance, by lying police officers and police-paid “witnesses.” The victims usually knew no lawyers and could not afford private counsel. Victims were made to understand that conviction and a prison sentence were a foregone conclusion unless money was paid through certain attorneys to court personnel, police and others.
The conspiracy had been highly effective, innocent people either parted with their life’s savings or faced prison sentences, the women often on spurious convictions for prostitution. It was discovered, during the investigation, that 51 young women had been illegally confined in the women’s prison at Bedford.
As a result of the investigation, formal charges of corruption were brought against many involved in the scheme. The Appellate Division ordered the dismissal of corrupt judges. Later, when Mayor Jimmy Walker reneged on his agreement to pay the commissioner’s cost, a writ of mandamus was brought before the Appellate Division, which ordered the mayor to pay. The Seabury Commission’s work resulted in a massive shake-up of the lower court system, and the resignation of Jimmy Walker. New York County Sheriff Thomas M. Farley was removed from office by Gov. Franklin D. Roosevelt. The Seabury investigation would also lead to the indictment of Deputy City Clerk James J. McCormick and the arrest of State Senator John A. Hastings.
The pressure for reform, once unleashed, later ensnared State Senator Hofstadter when the executive committee of the Association of the Bar of the City of New York held that State Senator Hofstadter had violated the public trust by having accepted a judicial appointment from Tammany Hall when he was investigating that political organization's "domination of the city government." 
- "Samuel Seabury (1873-1958)". Historical Society of the New York Courts.
- New York State Supreme Court Appellate Division First Department, About the Court 1930-39, available at http://www.courts.state.ny.us/courts/ad1/centennial/1930_1939.shtml.
- "Bar Renews Fight on Judicial 'Deals'". The New York Times. December 14, 1932.
- Mitgang, Herbert. The Man Who Rode the Tiger: The Life and Times of Judge Samuel Seabury J. B. Lippincott Company Philadelphia, 1963.(ISBN 0823217213)
-  New York State Courts centennial page
- SURPRISE MOVE IN ALBANY in the New York Times on March 24, 1931 (subscription required)
- INQUIRY COMMITTEE ORGANIZES AND ACTS; Hofstadter Is Made Chairman in the New York Times on April 9, 1931 (subscription required)
- ACCEPTS POST OF COUNSEL in the New York Times on April 9, 1931 (subscription required)