However, WTO members must inform the secretariat when concluding new free trade agreements and, in principle, the texts of free trade agreements are subject to review by the Committee on Regional Trade Agreements.  Although a dispute that arises within free trade areas is not the subject of disputes before the WTO Dispute Settlement Body, “there is no guarantee that WTO panels will comply with it and refuse to exercise jurisdiction in a given case.”  The preferential trade agreement requires the least commitment to the reduction of barriers to trade Are legal measures put in place primarily to protect a country`s national economy. They usually reduce the amount of goods and services that can be imported. Such barriers to trade take the form of customs duties or taxes, although Member States do not remove barriers between them. In addition, preferential trade zones have no common barriers to foreign trade. Sometimes the production costs incurred by one party are also considered to be those of another party. In rules of preferential origin, such a difference in treatment is generally provided for in the determination of cumulation or accumulation. . . .