In the 1944 case of Pope v. United States, the Supreme Court ruled in favor of a contractor who had been denied full payment for work completed under a government contract due to changes made by the U.S. Army Corps of Engineers during construction. The court held that when a party performs services at another's request and expectation of compensation, they are entitled to recover reasonable value for those services even if there is no formal contract specifying price or terms (a principle known as quantum meruit). This ruling established an important precedent regarding contracts with federal agencies: while such agreements must be authorized according to statute and regulations, once validly entered into they become binding obligations enforceable under general principles of contract law.

In the dissenting opinion for Pope v. United States, Justice Robert H. Jackson disagreed with the majority's decision to uphold a conviction based on an indictment that he believed was too vague and ambiguous. He argued that it failed to specify which of several possible offenses were being charged against the defendant, violating his constitutional right to be informed of the nature and cause of accusations against him. Furthermore, Justice Jackson expressed concern about potential abuse by prosecutors who could use such ambiguities in indictments as a means to manipulate juries into convicting defendants without clear evidence or understanding of specific crimes committed. He also criticized how this ruling would set a dangerous precedent for future cases where defendants might not receive fair trials due to unclear charges.