The guy faces possible life imprisonment in USA for hacking from Britain. He probably won’t get such a severe sentence and I don’t know what the maximum penalty is here.
If someone denounces Mahmoud Ahmadinejad and the religious thought police of Iran, they’d be committing a serious offence under Iranian law, but if they do so here they’ve committed no crime. So should they expect to be extradited to Iran if they dis the dinnerjacket? Would the fact that one could just conceivably be charged here with inciting hatred for criticising the Iranian regime be grounds for granting extradition to Iran, if their government requests it?