US media: Richard Walters, senior deputy assistant to the president in the White House, has left the administration, with Stephen Miller taking over for Susie Wales, following the losses inflicted on the Republicans in the midterm elections. Walters, a longtime ally of Susie Wills, is the first senior official to leave as part of the expected presidential staff shakeup. His departure indicates a shift in the balance of power towards Stephen Miller's team, although both sides described the departure as amicable.