49 C.F.R. § 1103.31 Responsibility for litigation.
Title 49 - Transportation
The practitioner bears the responsibility for advising as to questionable transactions, bringing questionable proceedings, or urging questionable defenses. Client's instructions cannot be used as an excuse for questionable practices.
Title 49: Transportation
PART 1103—PRACTITIONERS
Subpart B—Canons of Ethics
The Practitioner's Duties and Responsibilities Regarding Witnesses, Other Litigants and the Public
§ 1103.31 Responsibility for litigation.