FARGO, N.D. (AP) — A North Dakota man has been sentenced to eight years in prison on a child pornography charge. Forty-seven-year-old Christopher Halligan, of Emerado, pleaded guilty to one count of receipt of materials containing child pornography and three counts of possession of child porn. Authorities say Halligan had more than 28,000 files depicting children engaged in sexually explicit conduct. U.S.