Wal-Mart has issued a response to the Cornucopia complaint about its labeling practices. "Wal-Mart officials say that the company has done nothing wrong," according to Business Week.

The company notes it has has more than 2,000 locations that offer up to 200 organic selections, in addition to thousands of nonorganic offerings. It called the mislabeling an "isolated incident."

But many retailers sell far more than 200 organic offerings but seem to get the labeling right. Why doesn't Wal-Mart simply admit it made a mistake and plege to correct it? Instead, they are facing two potential investigations on mislabeling by the state of Wisconsin and the USDA.