^ Actually, Leyton
(in Treklit) was charged and put in prison (for five years). Both Hollow Men
and Articles of the Federation
include references to him, indeed the former includes Sisko seeking out his imprisoned mentor.
And that's one interpretation of what happened afterwards. We don't know one way or the other at the end of the episode.
Also, five years seems a bit on the lenient side. Compare to what Cyrano Jones was facing.
KIRK: No, you're not. There's something I want to show you. You know what the penalty is for transporting an animal proven harmful to human life?
JONES: Captain, one little tribble isn't harmful. Captain, you wouldn't do a thing like that to me, now would you? Would you?
SPOCK: The penalty is twenty years in a rehabilitation colony.
The Federation seems to take threats to democracy in stride.