1. Short title This Act may be cited as the Ninth Circuit Court of Appeals Judgeship and Reorganization Act of 2017 . 2. Definitions In this Act— (1) 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) the term new ninth circuit means the ninth judicial circuit of the United States established by the amendment made by section 3(2)(A); and (3) the term twelfth circuit means the twelfth judicial circuit of the United States established by the amendment made by section 3(2)(B). 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, Guam, Hawaii, Northern Mariana Islands.