Surprise increase in the cost of Obamacare for next fiscal year

Some technicalities apparently have some real consequences. So much for Obama's promises about how much Obamacare would cost.From the AP:

Cost estimates for a key part of President Obama's health care overhaul law have ballooned by $111 billion from last year's budget, and a senior Republican lawmaker on Friday demanded an explanation.
House Ways and Means Committee Chairman Dave Camp, R-Mich., wants to know by Monday why the estimated ten-year cost of helping millions of middle-class Americans buy health insurance has jumped by about 30 percent.
Administration officials say the explanation lies in budget technicalities and that there are no significant changes in the program.
The revised numbers, buried deep in the president's budget, stumped lawmakers and some administration officials for most of the week. At a congressional hearing Tuesday, Health and Human Services Secretary Kathleen Sebelius, who is in charge of carrying out the health care law, indicated she was unaware of the changes.
At issue are subsidies that will be provided under the health care law to help middle class people buy private coverage in new state insurance markets that will open for business in 2014.
Last year's budget estimated the cost of the aid to be $367 billion from 2014-2011. This year's budget puts it at $478 billion over the same time period. . . .