Trump changed his chief of staff after the election US President Donald Trump announced that Stephen Miller will become the new White House chief of staff. From 9 November he will replace Susie Wills in this post. Miller, 41, serves as White House deputy chief of staff and national security adviser. The official is considered the architect of the mass divorces in the Trump administration. Trump said that Wills will go to work for a non-governmental organization related to his political activities.