; 128 Stat. 1773), or by an independent entity, as determined appropriate by the Secretary. (4) First use The Under Secretary shall use the process under paragraph (1) to evaluate the results of the evaluation conducted under subsection (b)(1). The Under Secretary shall make any required improvements to such process based on the lessons learned by the Under Secretary resulting from such use. (b) Veterans Integrated Service Network (1) Evaluation Consistent with the report of the Comptroller General of the United States titled VA Health Care: Processes to Evaluate, Implement, and Monitor Organizational Structure Changes Needed (GAO–16–803), the Secretary, acting through the Under Secretary for Health, shall conduct an evaluation of the Veterans Integrated Service Network, including with respect to— (A) the implementation by the Secretary of realignments to such Network; and (B) identifying deficiencies to such Network that require corrective action. (2) Assessment and implementation In accordance with subsection (a)(4), the Under Secretary shall use the process implemented under subsection (a) to assess the results of the evaluation conducted under paragraph (1) and to implement changes and other actions to improve the Veterans Integrated Service Network. (c) Report Not later than 90 days after the date of the enactment of this Act, the Under Secretary shall submit to Congress a report that includes a description of— (1) the process implemented under subsection (a)(1); (2) the deficiencies identified under paragraph (1) of subsection (b); and (3) how the Under Secretary will carry out paragraph (2) of such subsection. (d) Prohibition on new appropriations No additional funds are authorized to be appropriated to carry out this Act, and this Act shall be carried out using amounts otherwise made available for such purposes.