(from Sunday's NYT)
1) Health care reform under Obama is just over 1/10th the cost of Bush's wars. Remind me when the Tea Party started?
2) The projections are probably too kind to Mr. Obama. He has 1.5 (or 5.5) more years to add new policies that aren't even on the graph yet.
3) That said, I really am less interested in which proportion of the deficit can be laid at which president's feet than I am in noting that the single largest contributor--the Bush tax cuts--seems to have been taken completely off the table. Personally, I dislike the mentality that categorizes tax cuts as "expenditures". But that's really beside the point...the deficit is not merely a spending problem, but a spending and revenue problem. More revenue has to be part of the solution.
4) If you add Bush's and Obama's stimulus spending together including the stimulus tax cuts under Obama (and I think you should, for the purpose of analyzing the effect of policy rather than scoring political points), that is the single biggest contributor to the deficit.