The Grocery Manufacturers Association (GMA) violated Washington's campaign finance disclosure laws while fighting a food labeling initiative.
That was the ruling Friday from a Thurston County judge.
Initiative 522 would have required labeling of genetically modified foods in Washington.
The GMA raised $14 million from large corporations to fight it. The GMA then donated $11 million in its own name, shielding the companies' identities.
Washington Attorney General Bob Ferguson revealed the names of those companies.