; and (B) take into account the resource requirements of United States Probation and Pretrial Services as a result of the transfer of Bureau of Prisons prisoners to prerelease custody or supervised release. (8) Assistance United States Probation and Pretrial Services shall, to the greatest extent practicable, offer assistance to any prisoner not under its supervision during prerelease custody under this subsection. (9) Mentoring services Any prerelease custody into which a prisoner is placed under this subsection may not include a condition prohibiting the prisoner from receiving mentoring services from a person who provided such services to the prisoner while the prisoner was incarcerated, except that the warden of the facility at which the prisoner was incarcerated may waive the requirement under this paragraph if the warden finds that the provision of such services would pose a significant security risk to the prisoner, persons who provide such services, or any other person. The warden shall provide written notice of any such waiver to the person providing mentoring services and to the prisoner. (10) Time limits inapplicable The time limits under subsections (b) and (c) shall not apply to prerelease custody under this subsection. (11) Prerelease custody capacity The Director of the Bureau of Prisons shall ensure there is sufficient prerelease custody capacity to accommodate all eligible prisoners. . (2) Effective date The amendments made by this subsection shall take effect beginning on the date that the Attorney General completes and releases the risk and needs assessment system under subchapter D of chapter 229 of title 18, United States Code, as added by section 101(a) of this Act. (3) Applicability The amendments made by this subsection shall apply with respect to offenses committed before, on, or after the date of enactment of this Act, except that such amendments shall not apply with respect to offenses committed before November 1, 1987. 103. GAO report Not later than 2 years after the Director of the