Newly-appointed American Ambassador to the Holy See Callista Gingrich presents credential letters to Pope Francis on December 22, 2017 in Vatican City.

Vatican Media.
Newly-appointed American Ambassador to the Holy See Callista Gingrich presents credential letters to Pope Francis on December 22, 2017 in Vatican City.

Gingrich was nominated for the position by President Trump in May 2017, and confirmed by the U.S. Senate the following October.