Million metric tons per year below the demand for sugar in the United States, domestic U.S. sugar prices are twice high prices in the rest of the world. Like quotas voluntary export as sugar in limit the amount of a product that can be imported annually. The difference is that the exporting country rather than the importing country imposes restraints. Usually, however, the "voluntary offer limit exports occurs because t to importing country has in plicate threatened to impose quotas. According to the World Trade Organization (see discussion in Section 1.3), however, export restraints illegal and should not be used to restrict imports.