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Associated Press
Treasury Secretary Jacob Lew, center, tours the Siemens manufacturing plant with Siemens Industry North America CEO Helmuth Ludwig, left, where electrical components for heavy machinery are assembled in Alpharetta, Ga., Thursday, March 14, 2013. The facility produces large traction drive trains for customers including AMTRAK, Caterpillar and the new Atlanta Streetcar initiative. (AP Photo/David Tulis)

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