3 Million Americans Could Lose Health Coverage as GOP Targets Medicaid Expansion

With Donald Trump’s return to the White House and Republicans taking full control of Congress in 2025, the Affordable Care Act (ACA) faces renewed threats. Among the most immediate targets is Medicaid expansion, which could result in millions of Americans losing their health coverage.

According to a report by KFF, a health information nonprofit, and the Georgetown University Center for Children and Families, more than 3 million adults in nine states could lose coverage if federal funding for Medicaid expansion is reduced. These states—Arizona, Arkansas, Illinois, Indiana, Montana, New Hampshire, North Carolina, Utah, and Virginia—have trigger laws that would automatically end their expanded Medicaid programs if federal funding drops.

Medicaid expansion under the ACA extended coverage to millions of low-income adults, with the federal government covering most of the costs. Republicans have long criticized this funding as unsustainable and have vowed to scale back the ACA’s provisions.

If Congress reduces the extra federal funding that has allowed states to expand Medicaid eligibility, states with trigger laws would quickly reverse their expansions. This would leave millions without access to critical health services, particularly in states where expanded Medicaid has provided a safety net for vulnerable populations.

The nine states at immediate risk of losing Medicaid expansion include:

• Arizona
• Arkansas
• Illinois
• Indiana
• Montana
• New Hampshire
• North Carolina
• Utah
• Virginia

These states relied on federal funding to widen eligibility for Medicaid, but their trigger laws mean coverage could end swiftly if funding is reduced.

The potential rollback would disproportionately impact low-income adults who gained coverage through Medicaid expansion. Health care advocates warn that scaling back the program could lead to increased uninsured rates, poorer health outcomes, and higher costs for states and hospitals that provide uncompensated care.

The GOP’s efforts to repeal or weaken the ACA have defined much of their legislative agenda over the past decade. Trump’s return to office and a Republican-controlled Congress reignite the fight over health care, with Medicaid expansion once again a key battleground.

As lawmakers prepare to take up the issue, the 3 million Americans at risk of losing coverage—and the states that rely on federal Medicaid funding—face an uncertain future. The debate is poised to reshape the nation’s health care landscape in the years to come.