Prioritizing accuracy in environmental analyses

(a) Limitation on permitting and regulation (1) In general In carrying out any permitting adjudication or regulatory process— (A) the head of each Federal agency shall, in taking into account any environmental considerations, only use such environmental considerations as are explicitly required under an Act of Congress; and (B) the use of any environmental consideration not described in subparagraph (A) is prohibited. (2) Use of robust methodologies In carrying out paragraph (1), the head of a Federal agency, in the determination of the head of that Federal agency— (A) shall strictly use the most robust methodology of assessment available; and (B) shall not use any methodology that is arbitrary or ideologically motivated. (b) Regulatory analysis The head of each Federal agency shall— (1) ensure that any estimates to assess the value of changes in greenhouse gas emissions resulting from the actions of that Federal agency, including with respect to the consideration of domestic versus international effects and evaluating appropriate discount rates, are, to the extent permitted by law, consistent with the guidance contained in Office of Management and Budget Circular A–4, dated September 17, 2003; and (2) as appropriate and consistent with applicable law, initiate a process to make such changes to any rule, regulation, policy, or action of the Federal agency as may be necessary to ensure consistency with Office of Management and Budget Circular A–4, dated September 17, 2003.