In this Nov. 2, 2012 photo, Jenifer Zeleny, center, does a quality-control inspection, as workers manufacture cables used in wind turbines, inside the production area at the Walker Comp

 

              In this Nov. 2, 2012 photo, Jenifer Zeleny, center, does a quality-control inspection, as workers manufacture cables used in wind turbines, inside the production area at the Walker Comp
In this Nov. 2, 2012 photo, Jenifer Zeleny, center, does a quality-control inspection, as workers manufacture cables used in wind turbines, inside the production area at the Walker Components factory, in Denver. One-third of the workers at the factory have been laid off this year. Orders are down, and the wind energy boom touted by President Barack Obama as a key to America's energy strategy has hit a wall in an election-year political dispute with Republicans over taxpayer support for renewable energy. (AP Photo/Brennan Linsley)