You really don't have a clue how complex it can get.
/johnny
Lol, I fully understand how a company that does not want to label a product will make up every excuse they can imagine to avoid labeling. A food producer knows full well whether it is using GMO corn, or soybeans, or rapeseed, or whatever other agricultural product they make use of, and whether they mead they use was fed GMO feedstuffs.
They just don't want to provide consumers with this information and that is the beginning and end of it.