20 C.F.R. § 416.1510 Authority of a representative.
Title 20 - Employees' Benefits
(a) What a representative may do. Your representative may, on your behalf— (1) Obtain information about your claim to the same extent that you are able to do; (2) Submit evidence; (3) Make statements about facts and law; and (4) Make any request or give any notice about the proceedings before us. (b) What a representative may not do. A representative may not sign an application on behalf of a claimant for rights or benefits under title XVI of the Act unless authorized to do so under §416.315.
Title 20: Employees' Benefits
PART 416—SUPPLEMENTAL SECURITY INCOME FOR THE AGED, BLIND, AND DISABLED
Subpart O—Representation of Parties
§ 416.1510 Authority of a representative.