Undocumented immigrants are largely ineligible for Medicaid except for limited emergency Medicaid benefits, so the claim that 'illegals are taking Medicaid and benefiting from it' is mostly false or misleading.
Is it true Illegals are taking Medicaid, and benefiting from them?

FactVerify
Source: factverify.com
What the Evidence Shows
The claim that undocumented immigrants ('illegals') are broadly taking Medicaid and benefiting from it is mostly false based on multiple credible sources. Federal law generally prohibits undocumented immigrants from receiving full Medicaid benefits. According to the National Immigration Forum and PolitiFact, undocumented immigrants are largely ineligible for federal healthcare programs like Medicaid and Medicare, except for emergency medical services covered under Emergency Medicaid.
The Center for Children and Families at Georgetown University confirms that the only Medicaid provision benefiting undocumented immigrants is Emergency Medicaid, which reimburses hospitals for emergency care but does not provide ongoing coverage. FactCheck. Org also debunks claims that millions of undocumented immigrants receive full Medicaid benefits, clarifying that such assertions often conflate emergency care reimbursements with full program participation.
While some reports mention over 1 million undocumented immigrants have received some form of Medicaid-related assistance, this primarily refers to emergency care rather than comprehensive Medicaid coverage. Therefore, the claim that undocumented immigrants are broadly taking and benefiting from Medicaid is misleading because it ignores the legal restrictions and the limited scope of benefits they can access.