President Trump will participate in Callista Gingrich's swearing-in ceremony as U.S. ambassador to the Vatican on Tuesday, according to a schedule released by the White House Monday evening.

Calista Gingrich worked as congressional aide for 19 years in the House of Representatives and also was a chief clerk of the House agriculture committee. She was nominated for the position by Trump in May and was confirmed by the Senate last week.

Vice President Mike Pence frequently swears in high-level presidential appointtees. He presided over the ceremonies for Defense Secretary James Mattis, Secretary of Labor Alexander Acosta, U.S. Ambassador to Canada Kelly Knight Craft, and U.S. Surgeon General Dr. Jerome Adams.

Gingrich is married to former House Speaker Newt Gingrich, an early Trump supporter in Washington. The former speaker noted the significance of the role as the Trump administration works with the Vatican on issues including the environment.

"She realizes how big a challenge it's going to be," Newt Gingrich said. "If you are the communications bridge between Pope Francis and President Trump, you're going to have a really big job and she knows she's going to have to work hard."

Gingrich the incoming ambassador is part of the Basilica's choir in Washington, D.C., and has been credited by her husband with playing a role in his conversion to Catholicism.