President-elect Donald Trump has begun filling key White House positions.Chip Somodevilla/Getty ImagesPresident-elect Donald Trump has started to fill key White House positions.He started by naming Susie Wiles his chief of staff, making her the first woman to hold the role.Here's a running list of those Trump has tapped.Now that President-elect Donald Trump has secured another four years in the White House, he's beginning to staff his administration.