The independent source for health policy research, polling, and news.
KFF’s policy research provides facts and analysis on a wide range of policy issues and public programs.
KFF designs, conducts and analyzes original public opinion and survey research on Americans’ attitudes, knowledge, and experiences with the health care system to help amplify the public’s voice in major national debates.
KFF Health News is a national newsroom that produces in-depth journalism about health issues and is one of the organization’s core operating programs.
Taken together, the reconciliation bill's provisions impose additional administrative burdens on state-based marketplaces and could limit state flexibility in choosing marketplace policies and procedures.
The Congressional Budget Office’s (CBO) latest estimate shows that the One Big Beautiful Bill would reduce federal Medicaid spending by $793 and that the Medicaid provisions would increase the number of uninsured people by 7.8 million. Previous CBO estimates show that 10.3 million fewer people would be enrolled in Medicaid in 2034. Building on prior KFF analysis, this analysis allocates these estimated federal spending reductions and enrollment losses across the states.
In his latest column, President and CEO Drew Altman shows how proposals contained in the House reconciliation bill could result in a one-third reduction in ACA Marketplace enrollment. “While all eyes are on the big Medicaid cuts being proposed in the House,” he writes, “significant changes are also being proposed that together would dramatically reduce enrollment in the ACA Marketplaces.”
The interactive maps illustrate how many people are enrolled in Medicare and Medicaid in each congressional district, including the number of people receiving full Medicaid and partial Medicaid benefits.
This brief considers how default enrollment into Medicare Advantage might work, potential challenges with this approach, and implications for beneficiaries, insurers, providers, agents and brokers, and the federal budget.
This analysis examines the potential impacts on states and Medicaid enrollees of implementing a per capita cap on the federal share of Medicaid spending for the ACA Medicaid expansion population only, which is another proposal that has been discussed by members of Congress.
This issue brief examines Medicaid expansion enrollment and Medicaid spending in expansion and non-expansion states and describes the characteristics of adults covered by the Medicaid expansion.
In his latest column, president and CEO Drew Altman discusses why debate about extending the ACA enhanced tax credits set to expire this year has been slow to develop, and why it could matter to Republicans politically if the tax credits are not extended.
Enrollment in Affordable Care Act (ACA) Marketplace health plans reached a record 24.3 million people, more than double the total in 2020, with most of the growth occurring in states won by President Trump in the 2024 election, a new KFF analysis finds. Almost all states have seen increases in enrollment since 2020, including six states where enrollment has more than tripled: Texas (up 255%), Mississippi (up 242%), West Virginia (up 234%), Louisiana (up 234%),…
This analysis of enrollment in Affordable Care Act (ACA) Marketplace health plans finds a record 24.3 million people enrolled in 2025, more than double the total in 2020, with most of the growth occurring in states won by President Trump in the 2024 election. In six states, enrollment more than tripled from 2020 to 2025: Texas, Mississippi, West Virginia, Louisiana, Georgia, and Tennessee.
© 2026 KFF