ATLANTA — Fulton County District Attorney Fani Willis is likely to impanel a special grand jury to support her probe of former President Donald Trump, a move that could aid prosecutors in what’s expected to be a complicated and drawn-out investigative process. A person with direct knowledge of the discussions confirmed the development to The Atlanta Journal-Constitution, saying the move could be imminent. Some legal observers viewed the news, first reported by The New York Times, as a sign that the probe is entering a new phase. “My interpretation is that she’s gotten as far as she can intervi...