I have no idea, but I do know most companies use rigorous testing in consumable goods to protect themselves from lawsuits and litigation...
Wheat has been GM for a long time....
GMO wheat has always been illegal in the USA.
Genetically Engineered wheat is probably what you meant.
The author of the article conflates the two either to mislead or out of ignorance.
There should be no labeling law. Purveyors of non-GMO food are already doing very well putting “non-GMO” on their labels.