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Path society-economics/affordable-care-act.md
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Date 2010-03-23
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Table of Contents

Affordable Care Act

Category: Society & Economics Key figures: President Barack Obama (signatory); Nancy Pelosi (House Speaker); Harry Reid (Senate Majority Leader)

Summary

The Patient Protection and Affordable Care Act (ACA), commonly called the Affordable Care Act or “Obamacare,” was signed into law by President Barack Obama on March 23, 2010. It represented the most sweeping overhaul of the United States healthcare system since the creation of Medicare and Medicaid in 1965.

The legislation passed the Senate on December 24, 2009, by a vote of 60–39, with all Democrats and two independents voting in favor and all Republicans opposed. The House passed the bill on March 21, 2010, by a narrower margin of 219–212, with 34 Democrats joining 178 Republicans in opposition.

The law contained several major structural reforms. It established regulated health insurance exchanges — online marketplaces where individuals and small businesses could compare and purchase private health plans. It expanded Medicaid eligibility to Americans earning up to approximately 138 percent of the federal poverty level. It instituted an individual mandate requiring most Americans to obtain health insurance coverage or pay a financial penalty. Insurers were prohibited from denying coverage or charging higher premiums based on pre-existing medical conditions. Young adults were permitted to remain on a parent’s health insurance plan until age 26.

Prior to the ACA’s enactment, approximately 16 percent of the US population — roughly 50 million people — lacked health insurance. Between 20 and 24 million Americans gained coverage through the law’s exchange subsidies and Medicaid expansion in the years following implementation.

In 2012, the Supreme Court upheld the ACA’s core provisions in National Federation of Independent Business v. Sebelius, ruling 5–4 that the individual mandate penalty was constitutional as a tax, while separately allowing states to opt out of the Medicaid expansion without losing existing federal Medicaid funding. The Tax Cuts and Jobs Act of 2017 subsequently reduced the individual mandate penalty to zero dollars starting in 2019.

Significance

The Affordable Care Act was the most significant expansion of US healthcare coverage in nearly half a century, reducing the uninsured rate from 16 percent in 2010 to 8.9 percent by 2016. It fundamentally restructured the individual health insurance market by ending underwriting based on health status and creating a new framework of subsidized, regulated exchanges. The law became a central and enduring fault line in American politics, with Republicans voting more than 60 times to repeal or modify it in the years following passage, and its major provisions surviving repeated legal and legislative challenges into the 2020s.

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