20 C.F.R. § 416.1510 – Authority of a representative.

(a) What a representative may do. Your representative may, on your behalf—
1. (1) Obtain information about your claim to the same extent that you are able to do;
2. (2) Submit evidence;
3. (3) Make statements about facts and law; and
4. (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.