Judicial Efficiency Improvement Act This bill divides the U.S. Court of Appeals for the Ninth Circuit into two judicial circuits: (1) the Ninth Circuit, and (2) a new Twelfth Circuit. The new Ninth Circuit shall be composed of California, Guam, Hawaii, and the Northern Mariana Islands. The new Twelfth Circuit shall be composed of the following states: Alaska, Arizona, Idaho, Montana, Nevada, Oregon, and Washington. The bill creates two additional circuit court judgeships for the Ninth Circuit. It creates 77 additional district court judgeships in specified judicial districts in Arizona, California, Colorado, Delaware, Florida, Georgia, Idaho, Indiana, Iowa, New Jersey, New Mexico, New York, and Texas. Additionally, it converts eight temporary district court judgeships to permanent judgeships in specified judicial districts in Kansas, Missouri, Arizona, California, Florida, New Mexico, North Carolina, and Texas.