The U.S. economy should grow at a rate of about 3%, economists say. The positive outlook, however, is not expected to improve the unemployment situation. While a growing economy generally means more jobs, some economists are concerned that a structural shift may have occurred. "I think what's happening is we're having economic growth in the United States really generated through productivity gains, rather than employment gains," said John Silvia, chief economist for Wells Fargo Securities.
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