Tiffany Trump is registered to vote in two states: report
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President TrumpDonald John TrumpWSJ: Trump ignored advice to confront Putin over indictments Trump hotel charging Sean Spicer ,000 as book party venue Bernie Sanders: Trump 'so tough' on child separations but not on Putin MORE’s younger daughter, Tiffany Trump, is registered to vote in two different states, reports revealed Wednesday after her father categorized being registered in two states as "voter fraud."

The Washington Post and NBC News confirmed a report by Heat Street that Tiffany Trump is registered in both Pennsylvania and New York.

Trump on Wednesday morning announced a "major investigation" into voter fraud. He cited "those registered to vote in two states" as part of the problem.

It is illegal to cast a ballot in multiple states, though it is not illegal to be registered in two states at the same time. It frequently happens when a person moves to a new state and registers at their new home, but their old state hasn't yet updated its voter rolls.

Tiffany Trump lived in Philadelphia while attending the University of Pennsylvania.

According to the report, she cast her November ballot in New York City.

CNN reported Wednesday that Steven Mnuchin, Trump's pick for Treasury secretary, is registered in both New York and California, although records show he last voted at his New York address in 2008.

The Sarasota Herald-Tribune reported that chief White House strategist Steve Bannon was also registered to vote in two states — New York and Florida.