5 U.S. Code § 1301
5 U.S. Code § 1301 is about Rules. It is under Part 2 (Civil Service Functions And Responsibilities) Chapter 13 (Special Authority) of Title 5 (Government Organizations and Employees) of the Code.
The Office of Personnel Management shall aid the President, as he may request, in preparing the rules he prescribes under this title for the administration of the competitive service.