Russ Kremer with some of his hogs on his farm in Frankenstein, Mo., in 2009. Instead of buying conventional feed, Kremer grazes his hogs in a pasture, and grows grains and legumes for them.
Jeff Roberson /AP
Protesters demonstrate against the production of genetically modified food in front of a Monsanto facility in Davis, Calif., in March. The local protest was not specifically about labeling.
Randall Benton/MCT /Landov
Farmer Alan Madison fills a seed hopper with Monsanto hybrid seed corn near Arlington, Illinois, U.S. A group of organic and other growers say they're concerned they'll be sued by Monsanto if pollen from seeds like these drift onto their fields.