US President Barack Obama waves as he makes his way onto the stage following a tour of the Copper Mountain Solar Project, the largest photovoltaic plant operating in the country, March 21, 2012 in Boulder City, NV. (Getty Images)Hopefully, it won't be long.
(CBS) Kicking off two-day tour touting his energy policies, President Obama on Wednesday reiterated his commitment to expanding America's renewable energy sources, telling a crowd in Boulder City, Nevada that "as long as I'm president, I will not walk away from the promise of clean energy."
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