Barack Obama · Democratic · Legislation
Affordable Care Act ('Obamacare')
Mar 23, 2010
Barack ObamaHealthcareLegislationSecond term (2013–17)
📜 View the official record on federalregister.gov
What happened
Signed the most consequential health law in decades, creating insurance marketplaces, expanding Medicaid, subsidizing coverage, and barring denial for pre-existing conditions.
How it happened
Passed Congress on party-line votes via reconciliation; signed March 23, 2010. Survived multiple Supreme Court challenges.
Documented impact
Positive impactsubstantiated
Drove the uninsured rate to record lows.
The uninsured rate fell from 15.5% (2010) to a record-low 7.9% (2023); marketplace enrollment reached ~20+ million.
Negative impactcontested
Premiums, costs and the individual mandate drew sustained opposition.
Critics cited rising premiums in some markets and the (later-repealed) mandate penalty; the law was politically divisive for years.
Public opinion
📊 Public opinion
The Affordable Care Act
Favorable55%
Unfavorable39%
Underwater at passage (~40% favorable); favorability later climbed to a record ~57% by the 2020s.
Sources
Every claim above links to its source. Primary record and cited reporting: