What don't you get?? They're afraid that a package labeled "genetically modified food" will frighten people to not buy the product. Since it's not been shown to be a health hazard, there's a legitimate argument whether they should be required to have it on the label. All animal and plant based food in a sense is genetically altered by selective breeding; that need not be on the label. Lots of things done to food (steamed, air dried, dessicated, boiled, sedimented) need not be on the label because they're not shown to be harmful and a vital consumer interest; some feel the same way about genetic alterations in the absence of any good evidence.