By Julian Hattem - 08/08/13 06:47 PM EDT
Two states, Connecticut and Maine, have passed laws requiring the labels, though both require neighboring states to pass similar laws before going into effect.
A bill in Congress, the Genetically Engineered Food Right-to-Know Act, has gained support in both chambers from a bipartisan group of lawmakers.
Lawmakers like Sen. Richard BlumenthalRichard BlumenthalDems fear Trump arguments on terrorism Tim Kaine backs call to boost funding for Israeli missile defense Senate Dems push Obama for more Iran transparency MORE (D-Conn.) have said that state laws should lead the way for federal action.
Supporters of the labels consider them a basic matter of transparency for critical consumers who might have unresolved questions about GMOs.
Agriculture groups, however, contend that GMOs do not pose a threat to human health and are necessary to feed a growing global population.