In an unpublished decision, the Third Circuit determined that a Pennsylvania conviction for making threats with intent to terrorize another is a crime involving moral turpitude. "We conclude that a threat communicated with a specific intent to terrorize is an act accompanied by a vicious motive or a corrupt mind so as to be categorically morally turpitudinous."
The full text of Javier v. Attorney General: http://www2.ca3.uscourts.gov/opinarch/152781np.pdf