; and (II) within a reasonable time thereafter, hold a public hearing at which the Commission shall afford interested parties an opportunity to be present, to present evidence, and to respond to the presentations of other parties and consumers, and otherwise be heard. (iii) Report Not later than the date that is 60 days before relief provided under subsection (a) is to terminate, or such other date as determined by the President, the Commission shall submit to the President a report on its investigation and determination under this subparagraph. (C) Period of relief Any relief provided under this section, including any extension thereof, may not, in the aggregate, be in effect for more than 6 years. (D) Limitation (i) In general Except as provided in clause (ii), the Commission may not conduct an investigation under subparagraph (B)(i) if— (I) the subject matter of the investigation is the same as the subject matter of a previous investigation conducted under subparagraph (B)(i)