Callista Gingrich, wife of former House Speaker Newt Gingrich, will be Donald Trump's nominee for U.S. ambassador to the Holy See, two U.S. news outlets are reporting.

The New York Times and CNN reported May 14 that the official announcement of the nomination is waiting to be approved by the Office of Government Ethics. White House Press Secretary Sean Spicer in a May 15 news briefing wouldn't confirm Gingrich's nomination and said "nothing's official until it's announced," when asked about the matter.