Enrolling in a marketplace plan or getting help paying for coverage (in the form of subsidies) is not considered to be a public charge! This means, that 1) if you have an eligible immigration status, you can apply for health insurance through the marketplace and accept any premium tax credits you're eligible for and 2) it won't affect your eligibility for a green card!
According to Healthcare.gov:
- "Enrollment in a Marketplace plan (with or without premium tax credits) is not a public benefit under the public charge final rule.
- For children under age 21 and pregnant women, enrollment in Medicaid or the Children’s Health Insurance Program (CHIP) won’t be considered to be a public benefit under the public charge rule."
However for certain adults, enrolling in Medicaid may be considered a negative factor in a public charge determination.