MOOT
subject to debate, dispute, or uncertainty, and typically not admitting of a final decision.
synonyms:
debatable · open to debate · open to discussion · arguable · questionable · [more]
VERB
(be mooted)
raise (a question or topic) for discussion; suggest (an idea or possibility).
NOUN
historical
an assembly held for debate, especially in Anglo-Saxon and medieval times.
law
a mock trial set up to examine a hypothetical case as an academic exercise.
A matter is legally moot, when not subject to the jurisdiction of the court. In other words, Sullivan is saying “you got away with it, you sonofabitch.”