When the plaintiff in a civil action is trustee for another, or has no actual interest in the contract on which the action is founded, a demand against the plaintiff may not be pleaded by way of counterclaim, but a demand against the person whom he represents or for whose benefit the action is brought may be pleaded.
D.C. Code § 13-504
Action by trustee
Dec. 23, 1963, 77 Stat. 516, Pub
Official source: D.C. Law Library (Council of the District of Columbia). Reproduced from public-domain District of Columbia statutes; confirm against the official source for the current text. Not legal advice.