after the Director of the Bureau of Prisons implements the risk and needs assessment system under section 3621 of title 18, United States Code, and every 2 years thereafter, the Comptroller General of the United States shall conduct an audit of the use of the risk and needs assessment system at Bureau of Prisons facilities. The audit shall include analysis of the following: (1) Whether inmates are being assessed under the risk and needs assessment system with the frequency required under such section 3621. (2) Whether the Bureau of Prisons is able to offer recidivism reduction programs and productive activities (as such terms are defined in section 3635 of title 18, United States Code). (3) Whether the Bureau of Prisons is offering the type, amount, and intensity of recidivism reduction programs and productive activities for prisoners to earn the maximum amount of time credits for which they are eligible. (4) Whether the Attorney General is carrying out the duties under section 3631(b) of title 18, United States Code. (5) Whether officers and employees of the Bureau of Prisons are receiving the training described in section 3236(f) of title 18, United States Code. (6) Whether the Bureau of Prisons offers work assignments to all prisoners who might benefit from such an assignment. (7) Whether the Bureau of Prisons transfers prisoners to prerelease custody as soon as they are eligible for such a transfer under section 3624(g) of title 18, United States Code. (8) The rates of recidivism among similarly classified prisoners to identify any unwarranted disparities, including disparities among similarly classified prisoners of different demographic groups, in such rates. 104. Authorization of appropriations (a) In general There is authorized to be appropriated to carry out this title $50,000,000 for each of fiscal years 2019 through 2023. Of the amount appropriated under this subsection, 80 percent shall be reserved for use by the Director of the Bureau of Prisons to implement the system under section 102 and the