FILE - In this Nov. 17, 2011 file photo, Energy Secretary Steven Chu testifies on Capitol Hill in Washington. On Friday, the White House announced that Chu would be resigning his post.

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FILE - In this Nov. 17, 2011 file photo, Energy Secretary Steven Chu testifies on Capitol Hill in Washington. On Friday, the White House announced that Chu would be resigning his post. (AP Photo/Evan Vucci, File) less