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Immigration status decides what health coverage you can buy in the United States, and the rules changed recently in ways that matter. Here is who can enroll in marketplace coverage, who cannot, and what the alternatives look like, current as of the 2025 federal rule changes.
US citizens and nationals
Full access. Citizens can enroll in marketplace plans during open enrollment or a special enrollment period, qualify for premium tax credits and cost-sharing reductions based on income, and enroll in Medicaid or CHIP if they meet the income rules. Nothing about this changed.
Lawfully present immigrants
Immigrants considered lawfully present can buy marketplace plans and qualify for subsidies on the same terms as citizens. This group includes green card holders, refugees, asylees, people with valid work authorization in qualifying categories, and several other humanitarian statuses.
Two details matter here. First, there is no five-year waiting period for marketplace coverage. The five-year bar that sometimes comes up applies to Medicaid for most adult immigrants, not to marketplace plans. A newly arrived green card holder can enroll and get subsidies immediately if income-qualified. Second, applying for coverage for eligible family members does not affect anyone’s immigration status. The application only asks about the people seeking coverage, and using marketplace subsidies is not counted against anyone in immigration proceedings.
DACA recipients: what changed
This is the recent change to know. In 2024, DACA recipients became eligible for marketplace coverage for the first time. Then a CMS rule finalized in 2025 amended the definition of lawfully present to exclude DACA recipients, effective August 25, 2025. That change ended their eligibility for marketplace plans and premium tax credits, and terminated coverage for DACA recipients who were enrolled.
If you have DACA status, check the current rules before assuming anything about 2027 enrollment, because this area has seen rapid reversals. Employer coverage, if available through your job, is unaffected by the marketplace rule.
Undocumented immigrants
Undocumented immigrants cannot enroll in marketplace plans and cannot get premium tax credits, even at full price. The realistic options are employer-sponsored coverage if a job offers it, buying a plan directly from an insurer off the exchange at full price, emergency Medicaid for emergency care, and community health centers, which charge on a sliding scale regardless of status. Some states use their own funds to cover additional groups, so state rules can be more generous than the federal floor.
Mixed-status families
A common situation: parents without eligible status, children who are citizens or lawfully present. The eligible family members can enroll and get subsidies. The application asks for immigration information only for the people applying for coverage. Parents do not need to provide their own status to get their children covered, and seeking coverage for eligible children does not put anyone at risk.
What to have ready when you apply
Non-citizen applicants need their immigration document numbers: green card, employment authorization card, I-94 record, or the relevant notice of action. Have the physical documents nearby when you fill out the application, because entering a number wrong triggers a verification notice and a paperwork chase. The marketplace verifies status through federal data systems, and mismatches are one of the most common reasons applications stall.
If your status changes during the year, report it. Gaining lawful presence is a qualifying life event that opens a special enrollment period, and losing eligible status ends marketplace eligibility. For the subsidy side of the equation, our guides to how the premium tax credit works and marketplace vs employer coverage cover the cost comparison once eligibility is settled.
