If, after appropriate investigation and consultation with the Surgeon General carried out after the expiration of the 24-month period following November 18, 1988, the Secretary finds that available scientific information would justify a change in, addition to, or deletion of the statement, or any part thereof, set forth in section 215(a) of this title, the Secretary shall promptly report such information to the Congress together with specific recommendations for such amendments to this subchapter as the Secretary determines to be appropriate and in the public interest.