A Bergen County man was accused this month of sexually assaulting a teenage girl after he started an online romantic relationship with and enticed her mother to visit him in New Jersey in 2022, federal prosecutors said. Corey Hipscher, 52, of Lodi, was charged with one count each of production, receipt and possession of child pornography. He was ordered to be detained after his first court appearance in Newark federal court on Wednesday, the U.S. Attorney’s Office District of New Jersey said in a release. Between 2020 and August 2023, Hipscher communicated with a now 15-year-old girl who lived…