Local Gov't can Prohibit GMOs says US Court of Appeals

The U.S. Court of Appeals for the Ninth Circuit issued its decisions Friday on whether federal and Hawai'i state laws preempt Hawai'i counties' authority to regulate genetically engineered (GE) crops and pesticide use. Of significance to state and local communities throughout the U.S., the Ninth Circuit ruled that federal law—specifically, the Plant Protection Act—does not prohibit states and counties from passing local laws to regulate and ban commercially-grown GE crops.

At the same time, however, the court ruled that under Hawai'i law, counties and municipalities do not have the authority to regulate GE crops (as some in other states do), and that Hawai'i state law places such authority in the hands of the State alone.

Source
Ecowatch.