More than 300,000 people who signed up for Obamacare could lose coverage unless they can prove they are US citizens or legal residents.
The issue is not necessarily an immigration status problem, but a data-matching issue.
The information they provided when they enrolled for the Affordable Care Act does not match what the federal government has on file.
The Centers for Medicare and Medicaid Services, which oversees the Federal Healthcare Exchange, says it has been reaching out to the affected people via email, phone calls and letters.
They have until September 5 to provide the necessary documents, otherwise coverage will end on September 30.
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