A worker installs parts on a Chrysler SUV engine at the Jefferson North Assembly Plant in Detroit. Plants in the U.S. are now operating above 90 percent capacity, but automakers are wary of adding large numbers of new workers.
Geoff Robins/AFP/Getty Images
A man views merchandise at an American Apparel store on the Third Street Promenade in Santa Monica, Calif., on April 24, 2012. Each year, the company makes more than 40 million articles of clothing out of its L.A.-area factory.