FILE - In this Oct. 31, 2012 file photo New York City Mayor Michael Bloomberg talks to traders at the New York Stock Exchange in New York. Bloombergbacked President Barack Obama over Re

 

              FILE - In this Oct. 31, 2012 file photo New York City Mayor Michael Bloomberg talks to traders at the New York Stock Exchange in New York. Bloombergbacked President Barack Obama over Re
FILE - In this Oct. 31, 2012 file photo New York City Mayor Michael Bloomberg talks to traders at the New York Stock Exchange in New York. Bloombergbacked President Barack Obama over Republican Mitt Romney on Thursday, saying the president will bring leadership critically needed to fight climate change in the wake of Hurricane Sandy. (AP Photo/Seth Wenig, File)