5 U.S. Code § 1306
5 U.S. Code § 1306 is about Oaths to witnesses. 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 Director of the Office of Personnel Management and authorized representatives of the Director may administer oaths to witnesses in matters pending before the Office.