; and (B) the number of instances in which the office of a United States attorney supported or opposed an expungement or sealing petition; and (2) includes any supporting data that the court determines relevant but does not name any petitioner. . 203. Retroactive effect This Act and the amendments made by this Act apply with respect to youth without regard to whether they become involved in the Federal criminal justice system before, on, or after the date of the enactment of this Act. B Youth Prison Reduction through Opportunities, Mentoring, Intervention, Support, and Education 211. Short title This subtitle may be cited as the Youth Prison Reduction through Opportunities, Mentoring, Intervention, Support, and Education Act or the Youth PROMISE Act . 212. Definitions In this subtitle: (1) Administrator The term Administrator means the Administrator of the Office of Juvenile Justice and Delinquency Prevention. (2) Community The term community means a unit of local government or an Indian tribe, or part of such a unit or tribe, as determined by such a unit or tribe for the purpose of applying for a grant under this Act. (3) Designated geographic area The term designated geographic area means a 5-digit postal ZIP Code assigned to a geographic area by the United States Postal Service. (4) Evidence-based (A) In general The term evidence-based , when used with respect to a practice relating to juvenile delinquency and criminal street gang activity prevention and intervention, means a practice (including a service, program, activity, intervention, technology, or strategy) for which the Administrator has determined— (i) causal evidence documents a relationship between the practice and its intended outcome, based on measures of the direction and size of a change, and the extent to which a change may be attributed to the practice