New legislation will be required for retired Marine Corps Gen. James Mattis to serve as the next defense secretary if he is confirmed by the Senate, setting the stage for both defense committee maneuvering and high-profile hearings on civilian control of the military that Washington hasn't seen in more than 60 years. Senate Armed Services Committee Chairman John McCain (R-AZ) has pledged to confirm Mattis as quickly as possible. Mattis retired in 2013 and requires special legislative action to serve...
