methodology to be used to determine the amount of, and any change in, the Federal regulatory cost attributable to each newly promulgated, or amendment to a, Federal regulation, rule, or statement. (C) Mandatory use by agencies For purposes of any analysis conducted by an agency (without regard to whether the analysis is conducted for purposes of this Act), each agency shall determine the amount of, and any change in, the Federal regulatory cost attributable to each newly promulgated, or amendment to a, Federal regulation, rule, or statement in accordance with the guidance issued under subparagraph (B). (2) OMB determination The OMB shall determine whether the change in the Federal regulatory cost determined under paragraph (1) would cause a breach of any level or allocation of the Federal regulatory cost in effect for a fiscal year, which shall incorporate any reduction to the level or allocation of the Federal regulatory cost attributable to a revision of a Federal regulation, rule, or statement during the fiscal year. (3) CBO review The CBO shall— (A) review the methodology used by the Bureau of Economic Analysis and the OMB for each determination under paragraphs (1) and (2)