1. Short title This Act may be cited as the Ninth Circuit Court Modernization and Twelfth Circuit Court Creation Act of 2017 . 2. Definitions In this Act: (1) Former ninth circuit The term former ninth circuit means the ninth judicial circuit of the United States as in existence on the day before the effective date of this Act. (2) New ninth circuit The term new ninth circuit means the ninth judicial circuit of the United States established by the amendment made by section 3. (3) Twelfth circuit The term twelfth circuit means the twelfth judicial circuit of the United States established by the amendment made by section 3. 3. Number and composition of circuits Section 41 of title 28, United States Code, is amended— (1) in the matter preceding the table, by striking thirteen and inserting fourteen ; and (2) in the table— (A) by striking the item relating to the ninth circuit and inserting the following: Ninth California. ; and (B) by inserting after the item relating to the eleventh circuit the following: Twelfth Alaska, Arizona, Idaho, Montana, Nevada, Oregon, Washington, Guam, Hawaii. . 4. Number of circuit judges The table contained in section 44(a) of title 28, United States Code, is amended by inserting after the item relating to the eleventh circuit the following: Twelfth 17 . 5. Places of circuit court The table contained in section 48(a) of title 28, United States Code, is amended by— (1) deleting Portland and Seattle in the item relating to the ninth circuit