; and (3) establish procedures requiring a formal response by the United States Marshals Service to any recommendation of the Ombudsman in the annual report submitted under section 4052(e)(7) not later than 90 days after the date on which the report is submitted to Congress. . 6. Data tracking of use of solitary confinement Section 4047 of title 18, United States Code, is amended by adding at the end the following: (d) Prison solitary confinement assessments (1) In general Not later than March 31 and September 30 of each year, the Director of the Bureau of Prisons and the Director of the United States Marshals Service shall each prepare and transmit to the Committee on the Judiciary of the Senate and the Committee on the Judiciary of the House of Representatives a semi-annual assessment of the use of solitary confinement (as defined in section 4052(a)) in covered facilities and shall make the respective assessment publicly available on the website of the Bureau of Prisons or the United States Marshals Service, as applicable. (2) Contents Each assessment submitted under paragraph (1) shall include— (A) the policies and regulations of the Bureau of Prisons, including any changes in policies and regulations, and the United States Marshals Service for determining which inmates are placed in each form of solitary confinement, or housing in which an inmate is separated from the general population during the reporting period, and a detailed description of each form of solitary confinement in use, including all maximum and high security facilities, all special housing units, all special management units, all administrative maximum facilities (as defined in section 4052(a)), and all communication management units