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

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

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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

toggle 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

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