Judicial Administration and Improvement Act of 2016 [ sic ] This bill divides the U.S. Court of Appeals for the Ninth Circuit into: (1) a new Ninth Circuit, to be composed of California, Hawaii, Oregon, Washington, Guam, and the Northern Mariana Islands; and (2) a newly established Twelfth Circuit, to be composed of Alaska, Arizona, Idaho, Montana, and Nevada. The bill designates locations where the new circuits are to hold regular sessions. The bill distributes active circuit judges of the former Ninth Circuit to the new circuits. Circuit judges and senior circuit judges currently stationed in Alaska, Arizona, Idaho, Montana, or Nevada may elect their circuit assignment. For each circuit judge in regular service who elects to be assigned to the new Ninth Circuit, the President shall appoint one additional circuit judge for the Twelfth Circuit.