Each spring, at tax preparation offices all across the nation, many illegal immigrants are now eagerly filing tax returns to take advantage of a tax loophole, using their ITIN numbers to get huge refunds from the IRS.
The loophole is called the Additional Child Tax Credit. It's a fully-refundable credit of up to $1000 per child, and it's meant to help working families who have children living at home.
But 13 Investigates has found many undocumented workers are claiming the tax credit for kids who live in Mexico – lots of kids in Mexico.
"We've seen sometimes 10 or 12 dependents, most times nieces and nephews, on these tax forms," the whistleblower told Eyewitness News. "The more you put on there, the more you get back."
The whistleblower has thousands of examples, and he brought some of them to 13 Investigates. While identifying information such as names and addresses on the tax returns was redacted, it was still clear that the tax filers had received large tax refunds after claiming additional child tax credits for many dependents.
"Here's a return right here: we've got a $10,3000 refund for nine nieces and nephews," he said, pointing to the words "niece" and "nephew" listed on the tax forms nine separate times.
"We're getting an $11,000 refund on this tax return. There's seven nieces and nephews," he said, pointing to another set of documents. "I can bring out stacks and stacks. It's just so easy it's ridiculous."
So why should undocumented workers receive tax credits for children living in a foreign country, which is a violation of IRS tax rules?
"If the opportunity is there and they can give it to me, why not take advantage of it?" the worker said.
Other undocumented workers in Indiana told 13 Investigates the same thing. Their families are collecting tax refunds for children who do not live in this country. Several of the workers told WTHR they were told it was legal for them to claim the tax credit for a child who does not live in the United States.