Which comprehensive study was conducted on the entire criminal justice system from 1965 to 1967?

The President's Crime Commission, formally known as the President's Commission on Law Enforcement and Administration of Justice, was established in 1965 and conducted a thorough analysis of the entire criminal justice system over the next two years. This comprehensive study aimed to investigate the state of law enforcement, the courts, and correctional institutions across the United States, seeking to identify problems and propose solutions for improving the effectiveness and fairness of the system.

The findings and recommendations from this commission significantly influenced criminal justice policies and practices and helped guide future reforms. It played a critical role in shaping the landscape of modern policing and criminal justice, making it a key milestone in the study of criminal justice during that era.

While the Kerner Commission primarily focused on the causes of racial unrest and the realities of urban violence, the Wickersham Commission was more narrowly focused on law enforcement practices and corruption in the early 20th century. The National Criminal Justice Commission, while also aimed at reforming areas of criminal justice, was not a comprehensive study of the system in the same way as the President's Crime Commission was.