The White House announced Tuesday that Jill Bidens Chief of Staff will be nominated as the U.S. Ambassador to Spain. However, it has not yet revealed who she will replace.Julissa is also an assistant to President Joe Biden in the East Wing. For Barack Obama, she was the U.S. ambassador in Uruguay.On Tuesday, the president announced that he would nominate four additional people for ambassador positions. They include Mark Gitenstein (ex-ambassador to the United States to Romania), as a representative to European Union and Patricia Mahoney (currently serving as U.S. Ambassador to the Republic of Benin), as ambassador to Central African Republic.