FILE - In this Feb. 12, 2013, file photo, President Barack Obama, 

FILE - In this Feb. 12, 2013, file photo, President Barack Obama, flanked by Vice President Joe Biden and House Speaker John Boehner of Ohio, gestures as he gives his State of the Union address during a joint session of Congress on Capitol Hill in Washington. Obama is talking about climate change like it was 2009. The president, who barely uttered the words "climate change" or "global warming" during the second half of his first term and during the re-election campaign, has re-inserted it boldly back into his lexicon. (AP Photo/Charles Dharapak, Pool, File)
Associated Press
FILE - In this Feb. 12, 2013, file photo, President Barack Obama, flanked by Vice President Joe Biden and House Speaker John Boehner of Ohio, gestures as he gives his State of the Union address during a joint session of Congress on Capitol Hill in Washington. Obama is talking about climate change like it was 2009. The president, who barely uttered the words "climate change" or "global warming" during the second half of his first term and during the re-election campaign, has re-inserted it boldly back into his lexicon. (AP Photo/Charles Dharapak, Pool, File)
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