Why had the president not once referred to the 47-percent video that showed Romney denigrating half of Americans as moochers and victims who don't assume responsibility for their lives? This video seemed to have sent the Romney campaign reeling and so easily could have been brought up by Obama. Focus groups conducted by both campaigns have found it had a serious impact on voter perceptions of Romney. The morning after the debate, I contacted several Democratic strategists and they each said they were puzzled by Obama's silence on this topic. Many were also surprised by his decision not to say a word about Romney's days at Bain Capital.