Many countries outside the U.S. are vehemently opposed to genetically engineered crops on their shelves because the health risks of such are yet to be determined. Basically, officials in Japan and Britain, for instance, are using the U.S. public as guinea pigs for at least ten years to see what the major health risks are. The countries outside the U.S. that do have genetically modified foods are labeled accordingly, unlike the U.S.