President Donald Trump's senior adviser and son-in-law, Jared Kushner, is registered to vote as a female in New York.
Public registration records show that Kushner, who is married to first daughter Ivanka Trump, apparently checked the "female" box when he registered to vote in 2009, according to the Hill.
Kushner, who has a vast portfolio of issues at the White House, has had to amend his federal security clearance forms multiple times to include meetings with foreign contacts.
He told congressional investigators that the mistakes have been due to a "miscommunication" with his assistant.
Prior to 2009, his New Jersey voter registration noted his gender as "unknown."
The Democratic opposition research firm American Bridge first spotted the error and slammed him in a statement to Wired.
"Kushner can't even fill out the most basic paperwork without screwing it up, so it's a mystery why anyone thinks he's somehow going to bring peace to the Middle East," said Brad Bainum, a spokesperson for the group. "Would anyone but the president's son-in-law still have a West Wing job after repeated disclosure errors and a botched security clearance form?"