It's set at 4x the poverty level, which comes out to (I believe) around $44,000.
The poverty level is dependent on the # of people in the family:
1 $10,830
2 14,570
3 18,310
4 22,050
5 25,790
6 29,530
7 33,270
8 37,010
So for a family of 4, 4X the poverty level is $88,200. For a family of 6 it is $118,200. Anyone under this limit would get tax credit for federal mandated health insurance.
One of the saddest lessons of history is this: If we've been bamboozled long enough, we tend to reject any evidence of the bamboozle. We're no longer interested in finding out the truth. The bamboozle has captured us. It is simply too painful to acknowledge -- even to ourselves -- that we've been so credulous. - Carl Sagan, The Fine Art of Baloney Detection
"You can't convince a believer of anything; for their belief is not based on evidence, it's based on a deep seated need to believe." - Carl Sagan
"It is far better to grasp the Universe as it really is than to persist in delusion, however satisfying and reassuring." - Carl Sagan, The Demon-Haunted World