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The Affordable Care Act was designed to provide financial protection to Americans in their use of the health care system. This required addressing two intertwined problems: cost barriers to accessing coverage and care, and barriers to comprehensive risk protection provided by insurance. We reviewed the evidence on whether the law was effective in achieving these goals. We found that the Affordable Care Act generated substantial, widespread improvements in protecting Americans against the financial risks of illness. The coverage expansions reduced uninsurance rates, especially relative to earlier forecasts; improved access to care; and lowered out-of-pocket spending. The insurance market reforms also made it easier for people to get and stay enrolled in coverage and ensured that those who were insured had true financial risk protection. But subsequent court decisions and congressional and executive branch actions have left millions uninsured and allowed the risk of inadequate insurance to resurface.
Glied et al. (Sun,) studied this question.