How much does the Affordable Care Act addresses this? I know insurance can't be denied to people with pre-existing conditions and there can't be any life-time expense caps. But is there any measure to address the high cost of health care in US?
Effective next year up to 400% of the poverty line is eligible for some fraction of their expenses covered under Medicaid. If you are beyond that threshold is the infamous "uninsured tax". Note that 400% of the poverty line is around $50k a year.
The poverty line is a sliding scale based on household size, so for a 4 person household that threshold is 94,200. It is basically the "you make enough money that you can either get insurance through work or the flat rate we are forcing insurers to pay".