Within 90 days after the date of liquidation or other decision, an importer or consignee may protest the decision and receive an administrative review. The protest is filed with the port director whose decision is being protested. At the time the initial protest is filed, the importer or consignee must make a request for further review if one is desired. Review of the port director's decision by the Customs Service Center or Headquarters is then automatic. Notice of the denial of all or part of the protest will be mailed to the person filing the protest or to his agent. Any person whose protest has been denied may contest the denial by filing a civil action in the United States Court of International Trade.