Morrison Waite,
Clark v. United States (102 U.S. 322…
“ The appellants might have recovered of the provost-marshal-general at New Orleans the money which he received from them to secure the release of their cotton and the indorsement of the permit and executive order. His wrongful and fraudulent extortion of the money which was ultimately taken from him and deposited in the treasury did not divest them of their title to it, nor bar their right to recover it of the United States.An action may be maintained whenever the defendant, who has received money belonging to the plaintiff, is obliged by the ties of natural justice and equity to refund it. ”
