This bill takes away Washington, D.C.'s local government's power to change criminal sentencing laws that are already on the books—meaning D.C. can no longer pass its own rules to adjust how long people are sentenced for crimes. It also narrows who counts as a "youth offender" eligible for more lenient sentencing—lowering the cutoff from age 24 down to 18—and removes judges' ability to give youth offenders sentences below the required minimums that would otherwise apply. In practice, this means young people ages 19 to 24 who might currently get reduced sentences or probation instead of prison time would no longer qualify for that leniency, and judges would have less flexibility to go easy on younger offenders. The bill also requires D.C.'s top local prosecutor's office to post data on youth crime online and update it every month, so the public can track it.