This November, voters in Colorado and Oregon voted down referenda that would require the labeling of foods with genetically modified (GM) ingredients, joining California and Washington, where similar ballot measures have failed. However, the issue is far from settled. In May, the Vermont legislature passed the first mandatory law, scheduled to go into effect July 2016—but not without a fight. In June, the Grocery Manufacturers Association of Washington, DC, a leading opponent of state labeling laws, joined with other food trade organizations in filing a lawsuit contesting the Vermont law.

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