The Supreme Court of Justice of Mexico has upheld a ban on the commercial cultivation of genetically modified (GMO) corn, rejecting an appeal by companies including Bayer-Monsanto, Syngenta, and PHI Mexico. The court's president, Norma Lucía Piña Hernández, stated that the 2016 judgment, which the companies challenged, did not breach legal certainty and trust principles. The ban, which allows for experimental cultivation under certain conditions, is seen as a victory for native corn and traditional polyculture in Mexico, and for beekeeping and biodiversity. However, the issue of GMO crops in Mexico's agricultural sector remains complex, with a 2001 study revealing significant contamination of native corn and ongoing concerns about the impact of GMOs on local communities and the environment.