Intergalactic law
From Tardis Wiki, the free Doctor Who reference
Miniscopes were expressly forbidden by intergalactic law. (TV: Carnival of Monsters)
Eden 2 was a virtual level 1 planet used to lure in would-be conquerors and impose the punishments of intergalactic law upon them. The Vladlack were sentenced to a thousand years hard labour for their invasion attempt. (COMIC: Freeze)