I don't think "corn" is in anyway a controled substance. There wouldn't be any reason for a company to ask or even be concerned about putting corn products into foods, would there?

             Now, if we were marketing Alice B. Toklas brownies, that would bring out the food police.

             One of the things that comes to mind, though, is this: if corn is in everything, and ethanol production raises the value of corn, wouldn't that raise the cost of everything else?