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A major rule, as defined by 5 U.S.C. § 801 (Pub. L. 104-121) is a rule resulting in, or is likely to result in, an annual effect on the economy of $100 million or more or meets other criteria specified in that Act. The classification as a major rule is ultimately made by the Administrator of the Office of Information and Regulatory Affairs (OIRA). Major rules are subject to review by OIRA before they can be published as proposed or final rules in the Federal Register. The definition of a major rule is essentially the same but distinct from that of an economically significant rule.


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