In a statement on Monday, the Mexican Ministry of Economy said its decree was aimed at ensuring that tortillas are made with native Mexican corn varieties, in an effort to ensure the biodiversity of the corn that is grown in the country. It said it would draw on data and evidence to demonstrate that the ban had not had an impact on commerce, and was consistent with the trade agreement.In the United States, the vast majority of corn planted has been bioengineered to be resistant to herbicides and insects. Bt corn, for example, contains a gene from a soil bacterium that kills the European corn borer, an insect that feeds on maize and other grasses.Corn can also be modified to be resistant to glyphosate, the most widely used herbicide in agriculture and lawn maintenanc …
