This is something I discussed during a radio appearance I made Tuesday morning (link here - but the discussion is well after the 30 minute mark). Why doesn't Obama get blamed for not addressing the fiscal cliff issue sooner? The American people hired Obama to be the president for four years. He, however, seemed to completely neglect his presidential duty in this matter. He should have been working on this issue in August, September, and October. Instead, Obama choose to campaign.
The House of Representatives and Senate share a bit of blame too, but this wasn't going anywhere without Obama. It is really quite sad that nobody seems to think there was anything wrong with this.