Will definitely have to confirm. According to the Medicaid site, (https://www.medicaid.gov/medicaid/eligibility/index.html) their eligibility requirements states:
Non-Financial Eligibility
To be eligible for Medicaid, individuals must also meet certain non-financial eligibility criteria. Medicaid beneficiaries generally must be residents of the state in which they are receiving Medicaid. They must be either citizens of the United States or certain qualified non-citizens, such as lawful permanent residents. In addition, some eligibility groups are limited by age, or by pregnancy or parenting status.
The IL's will be a lawful permanent resident so they will meet this eligibility due to low/no income from my understanding. My next question here is, if I claim them as dependents for tax, will the IL's still be able to claim a "no-income" status being as a dependent? If not, then it looks to me it might be best to not claim them as dependents.