Undocumented (illegal) immigrants are generally not eligible for traditional Medicaid, except for limited emergency medical services, though some states provide state-funded coverage beyond federal rules.
Illegal immigrants can have access to Medicaid.

FactVerify
Source: factverify.com
Key Evidence
Federal law limits Medicaid eligibility for undocumented immigrants to emergency medical services only.
Many states do not provide full Medicaid coverage to undocumented immigrants, though a few use state funds to do so.
kff.orgkff.org5 Key Facts About Immigrants and Medicaid
The majority of noncitizen immigrants without qualified status cannot access traditional Medicaid.
What the Evidence Shows
The claim that illegal immigrants can have access to Medicaid requires careful breakdown. Federal law restricts Medicaid eligibility for noncitizens without 'qualified' immigration status, which excludes undocumented immigrants. They are only eligible for Medicaid coverage of emergency medical services under federal rules.
However, some states use their own funds to provide broader health coverage to undocumented immigrants, but this is not federally funded Medicaid. Additionally, certain groups of immigrants with legal status may face a five-year waiting period before qualifying for Medicaid. The confusion arises because some people conflate state-funded programs or emergency Medicaid with full Medicaid eligibility.
The claim as stated implies general access to Medicaid for illegal immigrants, which is inaccurate under federal law. The nuance is that emergency services are covered federally, and some states expand coverage using state funds, but traditional Medicaid benefits are not available to undocumented immigrants. This distinction is important and often misunderstood in public discourse.