Fresh white spuds aren't allowed in a government supplemental nutrition program for women and children because, unlike other fruits and vegetables, potatoes aren't lacking in the typical diet. Paul J. Richards/AFP/Getty Images hide caption

itoggle caption Paul J. Richards/AFP/Getty Images

Clearly, he's as surprised by the allegations as the rest of us. iStockphoto.com hide caption

itoggle caption iStockphoto.com

Plant pathologists sequenced the genome of 19th century potato specimens like this one from London's Kew Gardens herbarium, collected during the height of the Irish famine in 1847. Marco Thines/Senckenberg Gesellschaft für Naturforschung hide caption

itoggle caption Marco Thines/Senckenberg Gesellschaft für Naturforschung

Potatoes come in all colors, like these Red Erik, Snowball, Cariboo, Purple Peruvian, Caribe and French Red varieties. David Cavagnaro/Corbis hide caption

itoggle caption David Cavagnaro/Corbis