Today, names like Mancuso, Weisman and Conan only hint at their ethnic roots. But 100 years ago, any of them would have immediately been recognized as belonging to a distinct ethnic group, complete with stereotypes and discrimination. Talk of the Nation looks at how America has expanded the definition of whiteness throughout history.
David Roediger, author of Working Toward Whiteness: How America's Immigrants Became White and director of the Center on Democracy in a Multiracial Society at the University of Illinois in Urbana
Jaime Gamboa, editor of Tu Ciudad