Negotiations between the U.S. and Mexico to review the sugar suspension agreements of December 2014 are becoming more controversial. This is largely on technical points, but comes at a time of increasing political scrutiny of trade relations. Panjiva data shows U.S. imports of the products from Mexico fell 41% in August on a year earlier. Mexican exporters including Empresas Santos and Ingenio Melchor Ocampo are diversifying – 74% of the exports of the products covered went to the U.S. in the first 8 months of 2016 vs. 83% a year earlier. Yet, Mexican exports still fell 35% glob...