Pew's Claussen previews upcoming debate on Senate bill

As the Senate begins to weigh in on the Kerry-Lieberman "American Power Act," what changes can Democrats make to the bill to reach 60 votes for passage? During today's OnPoint, Eileen Claussen, president of the Pew Center on Global Climate Change, discusses the political challenges facing the bill and explains what changes may need to be made to garner Republican votes.