34 U.S.C. § 10131

It is the purpose of this subchapter to provide for and encourage the collection and analysis of statistical information concerning crime, juvenile delinquency, and the operation of the criminal justice system and related aspects of the civil justice system and to support the development of information and statistical systems at the Federal, State, and local levels to improve the efforts of these levels of government to measure and understand the levels of crime, juvenile delinquency, and the operation of the criminal justice system and related aspects of the civil justice system. The Bureau shall utilize to the maximum extent feasible State governmental organizations and facilities responsible for the collection and analysis of criminal justice data and statistics. In carrying out the provisions of this subchapter, the Bureau shall give primary emphasis to the problems of State and local justice systems.