U.S. President Barack Obama (R) is greeted by New Jersey Governor Chris Christie upon arriving in Atlantic City, New Jersey, on October 31, 2012 to visit areas hardest hit by the unprecedented cyclone Sandy. Americans sifted through the wreckage of superstorm Sandy on Wednesday as millions remained without power. The storm carved a trail of devastation across New York City and New Jersey, killing dozens of people in several states, swamping miles of coastline, and throwing the tied-up White House race into disarray just days before the vote.