Sitna Quiroz on “Biofuels, corn prices and food security in Mexico:” “Media reports attributed the rise in tortilla prices to dwindling imports of corn due to its increasing demand for ethanol production. Others argued that the problem was not lack of corn, but rather the monopolizing practices and speculation carried out by the main companies that have controlled corn commercialization in Mexico ever since president Salinas privatized CONASUPO, the major parastatal company that used to regulate prices and subsidize corn.”