The homeless and others in need enjoy lunch at the Los Angeles Mission on Nov. 23, 2011, in celebration of Thanksgiving. Legislation to ban organizations from serving food to homeless people in public places has been proposed in Los Angeles. Frederic J. Brown/AFP/Getty Images hide caption

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People shop in a Miami grocery store on July 8. USDA says that despite the drop in unemployment, the number of food insecure Americans has not declined because higher food prices and inflation last year offset the benefits of a brighter job market. Joe Raedle/Getty Images hide caption

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Volunteers at the Maryland Food Bank in Baltimore sort and box food donations on a conveyor belt. The bank started working with groups like the USO in 2013 to provide food aid to families affiliated with nearby military bases. Pam Fessler/NPR hide caption

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Shabazz Napier of the Connecticut Huskies speaks to the media in the locker room after defeating Kentucky in the NCAA men's championship on April 7. Jamie Squire/Getty Images hide caption

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Food banks have become a primary source of nutrition for rural farmworker communities in the Central Valley. Scott Anger/KQED hide caption

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A mural in the isolated city of Iqaluit, in Canada, where food insecurity is tied up with native culture, poverty, and high food prices. ascappatura/Flickr.com hide caption

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This Panera Cares store in Chicago switched from for-profit to nonprofit this summer, and it started asking customers to pay whatever they want. Niala Boodhoo for NPR hide caption

itoggle caption Niala Boodhoo for NPR