Foreign Trade Zone Fee Structure Act of 1986 - Prohibits the Commissioner of Customs from implementing: (1) the proposed fee structure relating to Customs Service supervision of foreign trade zones; and (2) any fee structure in connection with Customs Service supervision of foreign trade zones that would offset the competitive cost advantage enjoyed by foreign trade zone operators, offset the operational advantages that accrue with respect to merchandise imported through foreign trade zones, or demonstrably inhibit the use of foreign trade zones.