The claim is misleading because while Democrats are involved in the government shutdown negotiations and some Republican figures accuse them of pushing for healthcare benefits related to immigrants, multiple reliable sources clarify that Democrats did not shut down the government specifically to provide free healthcare to illegal immigrants, and federal law prohibits such benefits for undocumented immigrants.
Democrats shut down the government to make sure illegal aliens get free healthcare… paid for by Americans.

Maxine Waters ADMITS Dems are shutting down government to fund healthcare for illegals - Daily Mail Online
Source: dailymail.co.uk
Key Evidence
AP News and FactCheck.org report that Democrats did not shut down the government specifically to give free health care to illegal immigrants but are pushing for inclusion of certain health care provisions in spending bills.
NBC News clarifies that U.S. Law prohibits federal health care benefits for undocumented immigrants, and Democrats seek benefits mainly for those with lawful presence.
Republican accusations frame the shutdown as a tactic over immigrant healthcare funding, but these claims are disputed by multiple fact-checkers.
What the Evidence Shows
The statement that "Democrats shut down the government to make sure illegal aliens get free healthcare paid for by Americans" conflates political rhetoric with the actual legislative and policy realities. Several fact-checking and news sources (AP News, Newsweek, FactCheck.org, NBC News) confirm that Democrats are advocating for the restoration or continuation of certain healthcare provisions, such as enhanced Affordable Care Act (ACA) premium tax credits, which may benefit some immigrants with lawful status (e.g., DACA recipients or asylum seekers), but not undocumented immigrants broadly. Republican leaders and some media outlets frame the shutdown as a tactic by Democrats to fund healthcare for illegal immigrants, often using inflammatory language. However, federal law currently prohibits undocumented immigrants from receiving federal health care benefits. The dispute centers more on broader budgetary and policy disagreements, including ACA tax credits and immigration-related provisions, rather than a direct effort to provide free healthcare to all illegal aliens.
One source (Daily Mail) cites a statement by Rep. Maxine Waters that is interpreted as an admission of Democrats shutting down the government over this issue, but this is not corroborated by other major fact-checkers or official statements. The overall consensus among reputable sources is that the shutdown involves complex budget negotiations with immigration-related healthcare provisions as one element, but it is inaccurate to say Democrats shut down the government solely or explicitly to provide free healthcare to illegal aliens.
In summary, the claim oversimplifies and distorts the situation by ignoring legal restrictions on immigrant healthcare benefits and the broader context of budget negotiations.