The battle over milk labels is heating up between the National Milk Producers Federation and a vegan group known as the Good Food Institute. GFI wants the FDA to clarify once and for all that soy based beverages can be labeled as soy milk. Federation’s Chris Galen says GFI is digging up an old petition and what they’re doing is in violation of legal food standards.

He says their studies prove that imitation milk products don’t contain the nine nutrients that milk does.

Galen says his group is backing legislation introduced in both Houses of Congress called the Dairy Pride Act which would require FDA to take action against imitation labels and set a timeline for enforcement. He says no other country allows the type of label GFI is calling for.

Meanwhile, the GFI is threatening to sue if the FDA decides to restrict the use of soy milk claiming it would have violated the First Amendment.