[NewinTexsas]

obama’s health care industry takeover has a nasty surprise for the housing market. A 4% tax on the sale price of an existing home. To go toward funding nationalized medicine. Due to kick in after the 2012 election.

I believe it is a 3.8% tax on unearned income above $250,000 you are referring to.

[Texas resident]

My understanding is that the tax applies to the 250 figure but in the case of a sale of a house, the sale counts as income and is added to the adjusted gross income. So this would catch folks who sell a house less than 250.
Then the 3.8% applies.
Might not be absolutely accurate here, but saw this in the WSJ when details of obamacare started leaking out.