More than a decade after its enactment, the future of the Affordable Care Act (ACA) remains uncertain as the U.S. Supreme Court takes up another challenge to the law’s constitutionality in California v. Texas (known as Texas v. U.S. in the lower courts). Oral argument is scheduled for Tuesday, November 10, 2020.
The ACA remains in effect while the litigation is pending. However, if all or most of the law ultimately is struck down, it will have complex and far-reaching consequences for the nation’s health care system, affecting nearly everyone in some way.
For information about ACA Marketplace Open Enrollment, including fact sheets and 300+ FAQs, visit our collection of resources on Understanding Health Insurance.
Featured Affordable Care Act Resources

Explaining California v. Texas: A Guide to the Case Challenging the ACA
This issue brief answers key questions about California v. Texas (known as Texas v. US in the lower courts), the case challenging the Affordable Care Act to be heard by the Supreme Court.
Issue Brief See More
Related Affordable Care Act Resources
- 5 Charts About Public Opinion on the Affordable Care Act and the Supreme Court
- Affordability in the ACA Marketplace Under a Proposal Like Joe Biden’s Health Plan
- Eligibility for ACA Health Coverage Following Job Loss
- Protecting People With Pre-Existing Conditions Isn’t As Easy As It Seems
- Is COVID-19 a Pre-Existing Condition? What Could Happen if the ACA is Overturned
- Mental Illnesses May Soon Be the Most Common Pre-Existing Conditions
- Pre-Existing Condition Prevalence for Individuals and Families
- Eliminating the ACA: What Could It Mean for Medicaid Expansion?
- Loss of the Affordable Care Act Would Widen Racial Disparities in Health Coverage
- Loss of the ACA Could Greatly Erode Health Coverage and Benefits for Women
- The Effects of Medicaid Expansion under the ACA: Updated Findings from a Literature Review
- FAQs: Health Insurance Marketplace and the ACA
- Status of State Medicaid Expansion Decisions: Interactive Map
- Preventive Services Tracker
- Tracking Section 1332 State Innovation Waivers

Potential Impact of California v. Texas Decision on Key Provisions of the Affordable Care Act
The Supreme Court will review the constitutionality of the Affordable Care Act (ACA) this November in California v. Texas. This fact sheet summarizes the major provisions of the ACA, illustrating the breadth of its changes to the health care system. If all of most of the ACA is struck down, many of these provisions could be eliminated.
Issue Brief See More
Refine Results
- view as grid
- view as list
Kaiser Health Tracking Poll: September 2013
September 2013 Kaiser Health Tracking Poll gauges public opinion on the ACA days before open enrollment for Obamacare health insurance marketplaces begins.
Poll Finding Read MoreHow Obamacare May Be Holding Down Costs
In his latest column published in Politico, Kaiser President and CEO Drew Altman examines the recent historic slowdown in health-care costs and discusses whether Obamacare is a contributing factor.
Perspective Read MoreCalifornia’s Uninsured on the Eve of ACA Open Enrollment
This report presents the findings of a baseline survey of California’s uninsured adult population just before the start of the first open enrollment period under the Affordable Care Act (ACA). It will be followed by three other surveys over the course of the next two years that will capture the…
Report Read MoreKey Issues in State Implementation of the New and Expanded Home and Community-Based Services Options Available Under the Affordable Care Act
This brief summarizes the key issues identified and discussed by participants in Kaiser Family Foundation’s Commission on Medicaid and the Uninsured’s July 16, 2013 roundtable meeting on state adoption of the new and expanded Affordable Care Act home and community-based services (HCBS) options. While states have made overall progress in rebalancing their long-term care systems in favor of community-based care, state adoption of ACA HCBS options has been relatively slow to date, despite the growing demand for HCBS among beneficiaries and the enhanced federal funding associated with several of these options.
Issue Brief Read MoreHow Buying Insurance Will Change Under Obamacare
When the Affordable Care Act’s (ACA) health insurance marketplaces (also known as “exchanges”) go online this October, millions of people are expected to apply for private insurance coverage. Nobody expects the launch will be perfect, with no hitches and problems. The law not only replaces a fragmented and confusing assortment…
Perspective Read MoreHelping Hands: A Look at State Consumer Assistance Programs under the Affordable Care Act
Navigator and In-Person Assister programs created by the Affordable Care Act (ACA) will provide outreach and enrollment assistance during the open enrollment period for the new health insurance Marketplaces. This brief describes these programs, highlighting differences in how they are funded and structured and discusses some of the challenges they face.
Issue Brief Read MoreGetting into Gear for 2014: An Early Look at Branding and Marketing of New Health Insurance Marketplaces
Based on a review of publicly available materials as of September 2013, this brief provides an examination of the Marketplace branding strategies, websites, and marketing materials, providing insight into how consumers will be introduced to the Marketplaces and some of the key messages and approaches the Marketplaces will utilize to encourage individuals to enroll. As of September 2013, states and the federal government are on the eve of their October 1st launch of open enrollment for the new Health Insurance Marketplaces, where consumers will be able to shop for and purchase private coverage and potentially receive subsidies to lower the cost of that coverage. Achieving adequate enrollment through these Marketplaces will be important for fulfilling the Affordable Care Act’s (ACA’s) goal of reducing the nation’s uninsured rate. Moreover, sufficient enrollment, particularly among younger and healthy individuals, will be important for ensuring the financial sustainability of the Marketplaces over time. Recognizing the importance of enrollment, the federal government and the 17 states operating State-based Marketplaces have invested resources and conducted extensive consumer research to inform the branding and marketing campaigns for their Marketplaces.
Issue Brief Read MoreGetting into Gear for 2014: Insights from Three States Leading the Way in Preparing for Outreach and Enrollment in the Affordable Care Act
This report provides insight into preparations in Maryland, Nevada, and Oregon -three states that have established a State-based Marketplace, are moving forward with the Medicaid expansion, and are among the states leading the way in preparing for outreach and enrollment. e findings provide an overview of where these three states are in establishing their Marketplaces; preparing for the Medicaid expansion; planning for marketing, outreach and enrollment; and establishing enrollment assistance resources. It highlights the challenges the states have encountered and overcome, the successes they have achieved, and provides key lessons that may help inform implementation efforts moving forward.
Issue Brief Read MoreProviding Outreach and Enrollment Assistance: Lessons Learned from Community Health Centers in Massachusetts
As states and communities gear up to provide outreach and enrollment assistance under the ACA, the enrollment assistance experience of health centers in Massachusetts, where a major expansion of health coverage was implemented six years ago, offers valuable lessons that can help to inform current and emerging efforts by health centers and other community-based organizations to reach and enroll millions of low-income, uninsured Americans in health insurance.
Issue Brief Read MoreHealth Affairs Article: Medicaid Expansion: Chronically Homeless Adults Will Need Targeted Enrollment and Access to a Broad Range of Services
Homeless adults may gain access to health services under the Affordable Care Act’s Medicaid expansion, which takes effect in 2014. This study, published in Health Affairs, analyzed the health coverage, health status, and health services use of 725 chronically homeless adults with disabilities in eleven cities in the United States.
Issue Brief Read More