; and (2) in paragraph (5)— (A) by striking 4 years after the date of enactment of this paragraph and inserting December 31, 2022 ; and (B) by striking carry out a study and inserting carry out a follow-up study . 125. Study on economic and budgetary analyses (a) In general Not later than 180 days after the date of enactment of this Act, the Secretary shall enter into an agreement with the National Academy of Sciences to— (1) carry out a study on the economic principles and analytical methodologies currently used by or applied to the Corps of Engineers to formulate, evaluate, and budget for water resources development projects; and (2) make recommendations to Congress on potential changes to such principles and methodologies to improve transparency, return on Federal investment, cost savings, and prioritization, in the formulation, evaluation, and budgeting of such projects. (b) Considerations The study under subsection (a) shall include— (1) an analysis of the current economic principles and analytical methodologies used by or applied to the Corps of Engineers in determining the total benefits and total costs during the formulation of, and plan selection for, a water resources development project; (2) an analysis of improvements or alternatives to how the Corps of Engineers utilizes the National Economic Development, Regional Economic Development, Environmental Quality, and Other Social Effects accounts developed by the Institute for Water Resources of the Corps of Engineers in the formulation of, and plan selection for, such projects; (3) an analysis of whether such principles and methodologies fully account for all of the potential benefits of project alternatives, including any reasonably associated benefits of such alternatives that are not contrary to law, Federal policy, or sound water resources management