Amendment modifies the basis for a determination not to prosecute a juvenile as an adult in the Federal system; clarifies that the Attorney General rather than the the Director of Bureau Assistance is authorized to provide grants; defines serious violent crime as murder, aggravated sexual assault, and assault with a firearm; allows funds to be used for renovating juvenile correction or detention facilities and training of correctional personnel; and allows 180 days for the Department of Justice to make grant awards.