The fact sheet listed several examples of benefits that undocumented immigrants receive:

Under current welfare laws, specifically the Personal Responsibility and Work Opportunity Reconciliation Act of 1996, undocumented immigrants generally are barred from welfare programs. But if they’re granted parole, they are classified as “qualified aliens” and become eligible for various welfare programs on a sliding scale, with full eligibility granted within five years.
According to the Center for Immigration Studies, providing welfare to one million undocumented immigrants could cost American taxpayers an additional $3 billion annually.
The U.S. House Homeland Security Committee estimated that taxpayers could pay as much as $451 billion to care for undocumented immigrants and “gotaways” who have entered the United States unlawfully since January 2021.
The Federation for American Immigration Reform calculated that American taxpayers spend at least $182 billion annually to cover the costs incurred by the presence of 20 million undocumented immigrants and their children, which includes $66.5 billion in federal expenses and an additional $115.6 billion in state and local expenses.
The Biden administration’s agenda, which sought to provide Medicaid-funded emergency services to undocumented immigrants, has cost federal and state taxpayers more than $16.2 billion, according to Congressional Budget Office estimates.
Since 2021, more than $1 billion has been allocated through the Federal Emergency Management Agency to undocumented immigrants.

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Trump signs executive order banning financial benefits for undocumented immigrants