More than a decade after its enactment, tens of millions of people nationwide rely on coverage options created through the Affordable Care Act of 2010 (ACA). The law has survived multiple court challeges at the U.S. Supreme Court and repeated attempts by Republicans in Congress to repeal it. Subsequent legislation has scaled back some aspects of the law and expanded others, including by the COVID-19 relief bill, the American Response Plan Act of 2021. This page highlights relevant analysis about the ACA and proposed and enacted changes to it..

For information about ACA Marketplace Open Enrollment, including fact sheets and 300+ FAQs, visit our collection of resources on Understanding Health Insurance.

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Web Briefing: The California v. Texas Supreme Court Case and Its Implications for the ACA

On Tuesday, Nov. 10, the Supreme Court will hear oral arguments on a legal challenge supported by the Trump administration that seeks to overturn the Affordable Care Act, an outcome that would have major effects throughout the health care system as the law’s provisions have affected nearly all Americans in…

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Key Facts about the Uninsured Population

This issue brief describes trends in health coverage prior to the pandemic, examines the characteristics of the uninsured population in 2019, and summarizes the access and financial implications of not having coverage.

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10 Reasons to Pay Attention to ACA Open Enrollment This Year

Whether new to the market or reenrolling, everyone who wants 2021 coverage through the ACA Marketplace must sign up during Open Enrollment. Here, we detail ten ways in which the 2021 ACA open enrollment period differs from enrollment periods in past years.

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Pre-Existing Condition Prevalence Among Women Under Age 65

We analyzed data from the 2018 National Health Interview Survey (NHIS) and 2018 Behavioral Risk Factor Surveillance System (BRFSS) to calculate prevalence rates of declinable health conditions. This data note looks at the share of adults ages 18-64 with declinable pre-existing conditions, with a particular focus on women.

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People with Disabilities Are At Risk of Losing Medicaid Coverage Without the ACA Expansion

This data note presents the latest state-level data about nonelderly Medicaid adults who have disabilities but do not quality for SSI and considers the implications for their continued coverage if the ACA expansion is invalidated by the Court.

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A Conundrum: Majority of Republican Voters Want to Overturn ACA but Keep Protections for People with Pre-existing Conditions

This post examines the implications of Republican voters wanting the Supreme Court to overturn the entire Affordable Care Act, but not the law’s protections for people with pre-existing conditions.

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Tracking Section 1332 State Innovation Waivers

This interactive map shows the status of all Section 1332 waivers requested by states. The Affordable Care Act (ACA) allows states to apply for innovation waivers to alter key ACA requirements in the individual and small group insurance markets and can be used to shore up fragile insurance markets, address unique state insurance market issues, or experiment with alternative models of providing coverage to state residents.

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Updated Subsidy Calculator and 300+ FAQs Help Consumers Understand the ACA Marketplaces as Open Enrollment Begins

Ahead of the annual Affordable Care Act (ACA) open enrollment period, the time during which consumers can shop for health plans or renew existing coverage, KFF has updated its Health Insurance Marketplace Calculator and its searchable collection of more than 300 Frequently Asked Questions about open enrollment, the health insurance marketplaces and…

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The Landscape of Medicaid Demonstration Waivers Ahead of the 2020 Election

As the Trump administration reaches the end of its first term, this issue brief considers the landscape of approved and pending Section 1115 Medicaid demonstration waivers under this administration and how the November 2020 presidential election may impact this landscape.

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Loss of the ACA Could Greatly Erode Health Coverage and Benefits for Women

This brief examines what the loss of the Affordable Care Act (ACA) would mean for women’s coverage and access to health care.

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The Henry J. Kaiser Family Foundation Headquarters: 185 Berry St., Suite 2000, San Francisco, CA 94107 | Phone 650-854-9400
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Filling the need for trusted information on national health issues, the Kaiser Family Foundation is a nonprofit organization based in San Francisco, California.