; and (2) support full compliance with the State and local codes. (b) State and Indian tribe certification of building energy code updates (1) Review and updating of codes by each State and Indian tribe (A) In general Not later than 2 years after the date on which a model building energy code is updated, each State or Indian tribe shall certify whether or not the State or Indian tribe, respectively, has reviewed and updated the energy provisions of the building code of the State or Indian tribe, respectively. (B) Demonstration The certification shall include a demonstration of whether or not the energy savings for the code provisions that are in effect throughout the State or Indian tribal territory meet or exceed— (i) the energy savings of the updated model building energy code; or (ii) the targets established under section 307(b)(2). (C) No model building energy code update If a model building energy code is not updated by a target date established under section 307(b)(2)(D), each State or Indian tribe shall, not later than 2 years after the specified date, certify whether or not the State or Indian tribe, respectively, has reviewed and updated the energy provisions of the building code of the State or Indian tribe, respectively, to meet or exceed the target in section 307(b)(2). (2) Validation by Secretary Not later than 90 days after a State or Indian tribe certification under paragraph (1), the Secretary shall— (A) determine whether the code provisions of the State or Indian tribe, respectively, meet the criteria specified in paragraph (1)