Pope Francis taps one of most outspoken and progressive-leaning U.S. Catholic leaders to Washington, D.C. ahead of Trump term, immigration battle.

He is appointing Sister Simona Brambilla, an Italian nun, to become prefect of the Vatican department responsible for all the church's religious orders.

Cardinal Robert McElroy has supported migrants and said the church should be more inclusive to women and LGBT people.

Pope Francis on Monday named the first woman to head a major Vatican office, appointing an Italian nun, Sister Simona Brambilla, to become prefect of the department responsible for all of the Catholic Church's religious orders.

Pope Francis on Monday named the first woman to lead a major Vatican department, appointing an Italian sister to take charge of the office that oversees the world's Catholic religious orders.

While women have been in secondary positions in the church, no woman has held the role of a prefect. The office now headed by Brambilla is one of the most important in the Vatican.