text:  This is Fresh Air, and today I'm talking to David Matlin, a senior fellow and advisor to the American Worker Project at the Center for American Progress, an independent nonpartisan policy institute. We're talking about the resurgence of manufacturing jobs and the union movement in America. Matlin is the author of two books, including Hollowed Out, Why the Economy Doesn't Work Without a Strong Middle Class, and he's also written for several publications.