20 C.F.R. § 403.135 What happens to your application for testimony?
Title 20 - Employees' Benefits
(a) If 20 CFR part 401 or 402 does not permit disclosure of information about which you seek testimony from an SSA employee, we will notify you under §403.145. (b) If 20 CFR part 401 or 402 permits disclosure of the information about which you seek testimony, (1) The Commissioner makes the final decision on your application; (2) All final decisions are in the sole discretion of the Commissioner; and (3) We will notify you of the final decision on your application.
Title 20: Employees' Benefits
PART 403—TESTIMONY BY EMPLOYEES AND THE PRODUCTION OF RECORDS AND INFORMATION IN LEGAL PROCEEDINGS
§ 403.135 What happens to your application for testimony?

