The purpose of this legislation is to restructure the judicial system by splitting the ninth judicial circuit of the United States into two separate circuits. This change aims to improve the administration of justice and enhance the efficiency of the courts in the affected regions. The key provisions of the law include the creation of a new twelfth circuit, which will encompass Alaska, Arizona, Idaho, Montana, and Nevada, while the new ninth circuit will consist of California, Hawaii, Oregon, Washington, Guam, and the Northern Mariana Islands.