REXBURG, Idaho (KIFI) — A 23-year-old Rexburg man, William S. Messer, has been charged with two felony counts of distribution of child sexually exploitative material (child pornography) following an mutli-month Internet Crimes Against Children (ICAC) investigation. The investigation began on Feb. 11 after the Rexburg Police Department received a CyberTip from the Idaho Attorney General's Office ICAC Task Force. On Wednesday, May 20, detectives e…