; (4) a description of any statutory, fiscal, regulatory, or other policy barriers to the appropriate consideration and use of a full array of natural infrastructure, natural features, and nature-based features in carrying out feasibility studies and projects; and (5) any recommendations for changes to law, or to fiscal, regulatory, or other policies, to improve the use of natural infrastructure, natural features, and nature-based features by the Corps of Engineers in carrying out feasibility studies and projects. 123. Review of Corps of Engineers assets Section 6002 of the Water Resources Reform and Development Act of 2014 (128 Stat. 1349) is amended to read as follows: 6002. Review of Corps of Engineers assets (a) Assessment The Secretary shall conduct an assessment of projects constructed by the Secretary for which the Secretary continues to have financial or operational responsibility. (b) Inventory Not later than 18 months after the date of enactment of the Water Resources Development Act of 2020 , the Secretary shall, based on the assessment carried out under subsection (a), develop an inventory of projects or portions of projects— (1) that are not needed for the missions of the Corps of Engineers; (2) the modification of which, including though the use of natural features or nature-based features (as those terms are defined in section 1184(a) of the Water Resources Development Act of 2016 ( 33 U.S.C. 2289a(a) ), could improve the sustainable operations of the project, or reduce operation and maintenance costs for the project