Vermont on Thursday became the first state in the U.S. to require the labeling of foods made with genetically modified organisms (GMOs) as Governor Peter Shumlin signed a law that is widely expected to be challenged in court by some food and agriculture companies.

The law, set to take effect July 1, 2016, would for the first time align at least a small part of the U.S. with more than 60 other countries that require labeling of genetically engineered foods. It also sets the stage for more than two-dozen other U.S. states that are currently considering the mandatory labeling of GMOs to move forward.

"Vermonters will have the right to know what's in their food," Shumlin told cheering supporters in a speech on the state House steps. "We are pro-information. Vermont gets it right with this bill."

Shumlin said the state had set up a "food fight fund" to take online donations to help defend the law from litigation expected to be filed by food industry interests to block the law.

Consumer groups and lawmakers supporting such mandatory labeling say there is no scientific consensus on whether or not genetically engineered crops are safe, and consumers should be able to easily distinguish products containing GMOs so they can avoid them if they wish.

The consumer sentiment has pushed a growing number of U.S. food companies to start using non-genetically modified ingredients for their products because of the consumer backlash against GMOs.

But the food and agriculture industries — including the makers of genetically modified corn, soybeans, canola and other crops widely used in packaged foods — are fighting mandatory labeling of GMOs. They say their products are proven safe, and that such labels will imply they are unsafe, confusing consumers and increasing costs for all parties involved.

"Scientific bodies and regulatory officials around the world recognize that foods made from genetically modified (GM) crops are as safe as their non-GM counterparts," said Cathleen Enright, executive vice president of the Biotechnology Industry Organization (BIO). "GM crops have enabled farmers to produce more on less land with fewer pesticide applications, less water and reduced on-farm fuel use."

BIO, a trade group whose members include Monsanto Co., Dow AgroSciences, a unit of Dow Chemical Co, and other biotech seed companies said food costs for an average household would rise as much as $400 per year due to mandatory labeling.

BIO and the Grocery Manufacturers Association are backing a proposed federal law that would nullify Vermont's labeling law and any other mandatory labeling of GMOs in the United States.

Both sides of the debate claim science supports their view. Last October, a group of 93 international scientists said there was a lack of empirical and scientific evidence to support what they said were false claims by the biotech industry about a "consensus" on safety. It said more independent research is needed and studies showing safety tend to be funded and backed by the biotech industry.

Reuters