; and (D) in subsection (d), as redesignated, by striking subsection (a) or (b) and inserting subsection (a) or (c) . (2) Technical and conforming amendment Section 3672 of title 18, United States Code, is amended in the eighth undesignated paragraph by striking subsection (b) or (c) and inserting subsection (c) or (d) . (b) Promoting full utilization of residential drug treatment Section 3621(e)(2) of title 18, United States Code, is amended by adding at the end the following: (C) Commencement of treatment Not later than 12 months after the date of enactment of this subparagraph, the Director of the Bureau of Prisons shall ensure that each eligible prisoner has an opportunity to commence participation in treatment under this subsection by such date as is necessary to ensure that the prisoner completes such treatment not later than 1 year before the date on which the prisoner would otherwise be released from custody prior to the application of any reduction in sentence pursuant to this paragraph. (D) Other credits The Director of the Bureau of Prisons may, in the Director’s discretion, reduce the credit awarded under subsection (h)(6)(A) to a prisoner who receives a reduction under subparagraph (B), but such reduction may not exceed one-half the amount of the reduction awarded to the prisoner under subparagraph (B). . (c) Supervised release pilot program To reduce recidivism and improve recovery from alcohol and drug abuse (1) In general Not later than 1 year after the date of enactment of this Act, the Administrative Office of the United States Courts shall establish a recidivism reduction and recovery enhancement pilot program, premised on high-intensity supervision and the use of swift, predictable, and graduated sanctions for noncompliance with program rules, in Federal judicial districts selected by the Administrative Office of the United States Courts in consultation with the Attorney General. (2) Requirements of program Participation in the pilot program required under paragraph (1) shall be subject to the