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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Mapping Pre-existing Conditions across the U.S.

This brief estimates the share of adults with pre-existing conditions by metropolitan and micropolitan statistical area (MMSA), and finds that in some areas, nearly four in ten have so-called declinable medical conditions that could lead to denials of individual insurance coverage based on pre-ACA underwriting guidelines.

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Medicaid and CHIP Eligibility, Enrollment, Renewal, and Cost Sharing Policies as of January 2018: Findings from a 50-State Survey

This 16th annual 50-state survey provides data on Medicaid and the Children’s Health Insurance Program (CHIP) eligibility, enrollment, renewal and cost sharing policies as of January 2018. It takes stock of how the programs have evolved as the fifth year of implementation of the Affordable Care Act (ACA) begins, discusses policy changes made during 2017, and looks ahead to issues that may affect state policies moving forward. It is based on a survey of state Medicaid and CHIP officials conducted by the Kaiser Family Foundation and the Georgetown University Center for Children and Families. State data are available in Appendix Tables 1-20.

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Poll: Public Says Drug Companies Have More Influence in Washington than the NRA

Democrats Split on Whether to Fix the ACA or Push for a National Health Plan; Few Democratic Voters Say a National Health Plan is Their Top Issue for the Midterms As policymakers weigh strategies to address the high cost of prescription drugs, the latest Kaiser Health Tracking Poll finds that…

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Brief Examines Efforts to Create Health Plan Options that Don’t Comply with the Affordable Care Act’s Rules

Though Congress last year failed to repeal key Affordable Care Act requirements for non-group health insurance that people buy themselves, the Trump Administration and some states are promoting other types of plans through regulatory changes that would allow the sale of products that skirt many of the ACA’s requirements. A…

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Analysis: Most Short-Term Health Plans Don’t Cover Drug Treatment or Prescription Drugs, and None Cover Maternity Care

A new Kaiser Family Foundation analysis of short-term, limited duration health plans for sale through two major national online brokers finds big gaps in the benefits they offer. Through an executive order and proposed new regulations, the Trump Administration is seeking to encourage broader use of short-term, limited duration health…

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A Comprehensive Review of Research Finds That the ACA Medicaid Expansion Has Reduced the Uninsured Rate and Uncompensated Care Costs in Expansion States, While Increasing Affordability and Access to Care and Producing State Budget Savings   

 Multiple studies over the last five years find that the Affordable Care Act’s Medicaid expansion has increased health coverage, affordability, and access to care while producing budget savings for states and reductions in uncompensated care costs for hospitals and clinics, according to a KFF review of more than 300 studies…

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Poll: Most Democrats Prefer a Presidential Candidate Who Wants to Build on the Affordable Care Act

The latest KFF Health Tracking Poll probes Democrats’ views about the general approaches to expanding health coverage and lowering costs put forward by the candidates. Most Democrats and Democratic-leaning independents (55%) say they prefer a candidate who would build on the Affordable Care Act to achieve those goals. Fewer (40%)…

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Strategies for Improving Health Coverage and Reducing Costs: Major Proposals and Key Considerations

KFF’s Tricia Neuman’s testimony before the U.S. House Committee on Ways and Means on June 12, 2019 describes a range of proposals to broaden health insurance coverage and make health care more affordable, the similarities and differences among them, and the policy choices and trade-offs that could have significant implications for coverage and costs.

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Joe Biden’s Big Lead on Health Care Issues

In an Axios column, Drew Altman discusses how this election year health isn’t a single issue — but several — and Joe Biden has the edge over President Trump on all of them, even as opposition to the ACA remains popular with Trump’s base.  

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Want to protect people with preexisting conditions? You need the full Affordable Care Act.

In this perspective published by the Washington Post, KFF Executive Vice President for Health Policy Larry Levitt explains why the popular Affordable Care Act provisions that ensure people with pre-existing conditions can access affordable health insurance can’t easily be preserved if other related provisions are overturned.

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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.