Updated January 24, 2013
The defeat in November 2012 of Proposition 37 in California was viewed as a keystone ballot initiative in the movement, now nationwide, that is advocating for the labeling of genetically modified (GMO) food products. The initiative in California was hardly considered a "high water mark" for those advocating for such labeling. There are numerous efforts afoot across the nation attempting to achieve the same ends as those pursued in California.
Ideally, the advocates of GMO labeling would like a federal mandate. Petitions have been filed with the U.S. Food and Drug Administration (FDA) to establish such a mandate, although they have not gained much traction. Pressure on President Obama for such a federal mandate will likely increase during his second term. A victory, large or small, in any of the states in which advocates are currently pursuing changes could move the pendulum in the movement's favor with the federal government. Only Alaska requires labeling of all products containing genetically engineered fish and shell fish. Beyond that, no states mandate GMO labeling.