; and (3) by striking section 2583 of this title and inserting such section . 355. Limitation on contracting relating to Defense Personal Property Program (a) Contracting prohibition The Secretary of Defense may not enter into or award any single or multiple-award contract to a single-source or multiple-vendor commercial provider for the management of the Defense Personal Property Program during the period beginning on the date of the enactment of this Act and ending on the date that is 60 days after the date on which the Comptroller General of the United States submits to the congressional defense committees a report on the administration of the Defense Personal Property Program, which was requested by the Committee on Armed Services of the Senate to be submitted to the congressional defense committees not later than February 15, 2020. (b) Review of proposals Nothing in this section shall be construed as preventing the Secretary of Defense from reviewing or evaluating any solicited or unsolicited proposals to improve the Defense Personal Property Program. 356. Prohibition on subjective upgrades by commanders of unit ratings in monthly readiness reporting on military units (a) In general The Chairman of the Joint Chiefs of Staff shall modify Chairman of the Joint Chiefs of Staff Instruction (CJCSI) 3401.02B, on Force Readiness Reporting, to prohibit the commander of a military unit who is responsible for monthly reporting of the readiness of the unit under the instruction from making any upgrade of the overall rating of the unit (commonly referred to as the C-rating ) for such reporting purposes based in whole or in part on subjective factors. (b) Waiver (1) In general The modification required by subsection (a) shall authorize an officer in a general or flag officer grade in the chain of command of a commander described in that subsection to waive the prohibition described in that subsection in connection with readiness reporting on the unit concerned if the officer considers the waiver appropriate in the