; (II) raises novel or serious legal or policy issues that will substantially and materially affect other transportation modes; or (III) adversely affects, in a substantial and material way, the economy, a sector of the economy, productivity, competition, jobs, the environment, public health or safety, or a State, local, or Tribal government or community. (iii) Emergency regulation (I) In general In an emergency as determined by the Administrator, the Administrator may issue a final regulation described in clause (i) without prior approval of the Secretary. (II) Objection If the Secretary objects to a regulation issued under subclause (II) in writing not later than 5 days (excluding Saturday, Sundays, and legal public holidays) after the issuance, the Administrator shall immediately rescind such regulation. (iv) Other regulations The Secretary may not require that the Administrator submit a proposed or final regulation to the Secretary for approval, nor may the Administrator submit a proposed or final regulation to the Secretary for approval, if the regulation— (I) does not require the approval of the Secretary under clause (i) (excluding a regulation issued under clause (iii))