A new HHS directive reverses decades-old interpretation of a 1996 law, restricting undocumented immigrants' health care services.

The Department of Health and Human Services is cutting undocumented immigrants’ access to several health care programs.

The move could potentially affect tens of millions of people each year. Undocumented immigrants will no longer have access to Head Start or the Community Health Center program. Head Start provides education and health care assistance to children.

The change alters a three-decade interpretation of the Personal Responsibility and Work Opportunity Reconciliation Act of 1996 (PRWORA), issued during the Clinton administration.