Despite the hate crime hoax charges against him being stunningly dropped on Tuesday, “Empire” star Jussie Smollett may not be out of the woods just yet. An investigation into a death threat letter the actor supposedly received prior to the alleged Jan. 29 attack has been handed over to the FBI, Chicago Police spokesperson Anthony Guglielmi told Fox News. Smollett initially had been suspected as the source of the letter. “The U.S. Postal Inspection Service is working closely with our law enforcement partners on this investigation,” the U.S. Postal Service said in a statement to Fox News. “We are unable...