The USDA approved GMO corn and soybeans [ resistant to the herbicide 2,4-D ]( http://www.commondreams.org/newswire/2014/09/17/organic-consumers-condemns-usda-approval-dows-new-gmo-crops ) , which was used in Agent Orange during the Vietnam war. Superweeds will experience a temporary setback, but in a few years they will evolve resistance to this chemical too.
Ссылка: https://stallman.org/archives/2014-jul-oct.html#20_September_2014_%28Agent_Orange-resistant_GMO_crops%29