Mexican Economy Secretary Ildefonso Guajardo is threatening to challenge the U.S. sugar program in the WTO, but the American sugar industry is likely to call his bluff. Mexican Sugar Dance Mexican Economy Secretary Ildefonso Guajardo came to Washington this week with a tough message: provide a suspension agreement granting duty-free access for a quota of his country's sugar or face retaliatory steps including challenging the U.S. sugar program in the WTO. The success of such a challenge is uncertain as U.S. authority for its sugar import quota system is uniquely contained in Headnote tariff authority under the old General Agreement on Tariffs and Trade (GATT). It runs headlong into the obligations under the Agreement in Subsidies and...