Why it matters
The chief of staff helps manage the president’s agenda and White House operations, so the appointment may affect how immigration policy and other priorities are handled. The articles do not identify a new policy or immediate effect on households, businesses or agencies.
What happens next
Miller has begun the role, and Deputy Chief of Staff Richard Walters is departing. How the staffing change will affect administration policy or its dealings with Congress is not yet clear.
Whether the administration announces changes to immigration policy
How the new chief of staff manages the White House agenda and congressional relations
Whether further senior staff departures follow