Upon request of the President, or upon petition on behalf of the industry concerned filed with the Commission not earlier than the date which is 9 months, and not later than the date which is 6 months, before the date any action taken under
section 2253 of this title is to terminate, the Commission shall investigate to determine whether action under
section 2253 of this title continues to be necessary to prevent or remedy serious injury and whether there is evidence that the industry is making a positive adjustment to import competition.