The administration has insisted that immigrants voting is a major problem nationwide, when in fact it is quite rare, as even its own investigations have shown.

Marva Cook was adopted as a toddler and had always assumed she was a U.S. citizen, she told Homeland Security investigators earlier this month, according to the criminal complaint.

Most of the immigrants targeted by federal authorities in California this week for alleged voter fraud had applied for U.S. citizenship and now face charges related to lying on forms or during interviews. Those charges could lead to years in prison and thwart their efforts to naturalize.