system
Given the following post, respond as if you're commenting on Reddit:
human
[Dark Knight Rises] Where was Joker?

In the Dark Knight Rises, Bane liberates all prisoners from Blackgate, which means that the Joker should’ve shown up in the movie, so then where was he? 

I’ve seen it argued that he was sent to Arkham after the events of TDK, but that’s not possible. The Dent Act that was passed in that movie denies the insanity defense to those with ties to organized crime. Joker was paid by the mob to kill Batman, so he can’t be declared insane. 

The logical answer from that point then would be that the Joker was executed, especially since the Dent Act also guarantees maximum sentencing for those connected to organized crime. The problem with that, however, is that Gotham City isn’t in a death penalty state. Neither New York nor New Jersey (the two states where people think Gotham is in) have capital punishment. 

With tall of that out of the way, I ask once again. Where is Joker in DKR?
gpt
Joker wasn't sent Arkham. He had escalated his antics to domestic terrorism and no longer fell under the jurisdiction of Gotham police or their courts. Somewhere between the two films he was transferred to bell reves or whatever the name of the supermax that is shown in suicide squad is. They're better equipped to handle a prisoner of his classification than a mental asylum or Gotham prison.

The only reason the FBI and other alphabet agencies weren't involved in the dark knight is very little time passes between his attack on the hospital and his arrest which would have warranted their involvement instead of a mob task force.