President-elect Donald Trump announced the nomination of Callista Gingrich as U.S. Ambassador to Switzerland. Trump praised her previous role as ambassador to the Vatican and her efforts in promoting religious freedom and combating human trafficking. Gingrich is married to former Speaker Newt Gingrich, a long-time supporter of Trump. Other ambassador nominations include Mauricio Claver-Carone and Ken Howery, both with noteworthy backgrounds aiming to support U.S. interests abroad. These appointments await Senate confirmation.