Should it be required to label GMO foods?

Can you show me any crop that isn't GMO? Everything you eat that we currently far has been modified. Corn, wild corn is about the size of your thumb, wild potatoes about the size of a half dollars, same with any crop we eat. Man has modified the plant to suit our needs. How we modified the plant might have changed, but the plants undergo a lot of testing and there are "natural" plants that we currently eat that if presented for testing would not be approved for consumption. So label away because everything would need a label.