With a renegotiation of NAFTA high on the incoming Trump administration’s agenda, a new Commerce Department investigation may tee up sugar as one of the first sectors to be discussed. However, it will be within the context of a vastly changing market for sugar in the U.S. than has existed for the past 20 years.Since NAFTA was passed in 1993, one of the most contentious sectors in its implementation has been sugar and sweeteners. This includes imports of Mexican sugar into the U.S. and exports of U.S. high fructose corn sweetener to Mexico. Sweetener trade has been subject to many side agreements with the most recent one executed in 2014, which limits refined sugar into the United States. That year, the U.S. sugar industry filed antidumping...