At this moment of time, trolling has been illegal on April 2012 in Arizona. (forgive me for being somewhat late on this) You could also possibly go to jail for about 25 years if it's more of to much or serious trolling.
Read this article to fully know the story.
Even coppercab said so in this video, that his buddies even had tried to make this illegal. They had actually made some success to atleast make it illegal in Arizona.