A label on a bag of popcorn indicates it is a non-GMO food. House Republicans on Thursday voted in favor of a law that would block states from mandating GMO labels. Robyn Beck/AFP/Getty Images hide caption

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The Salt

House To States: Don't You Dare Demand GMO Labels

A solid majority in the House of Representatives has voted to block efforts in some states to require labeling of GMOs.

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Arctic Granny (right), a GMO variety created by Okanagan Specialty Fruits, got the gren light from federal regulators Friday. The apple doesn't turn brown like a conventional Granny Smith apple (left). Okanagan Specialty Fruits hide caption

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Supporters of efforts to label GMOs in foods turn out at a rally in Denverin 2013. A ballot measure that would such labels failed to pass by a wide margin Tuesday. Luke Runyon/KUNC/Harvest Public Media hide caption

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Labels on bags of snack foods indicate they are non-GMO food products. This fall, Colorado and Oregon will be the latest states to put GMO labeling on the ballot. Robyn Beck /AFP/Getty Images hide caption

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Customers shop for produce at the Hunger Mountain Co-op in Montpelier, Vt., in 2013. Toby Talbot/AP hide caption

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A customer shops for produce at the Hunger Mountain Co-op in April 2013 in Montpelier, Vt. More than a dozen food cooperatives supported the bill that would require the labeling of genetically modified foods. Toby Talbot/AP hide caption

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A woman shops at a supermarket in New York City. Spencer Platt/Getty Images hide caption

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Supporters of genetically modified food labeling rally last month at Los Angeles City Hall. cheeseslave/Flickr.com hide caption

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