A 46-year-old Mandan, ND, woman was sentenced Sept. 19 in U.S. District Court to nearly 20 years in prison after being convicted of distributing drugs and possessing an unregistered firearm on the Cheyenne River and Rosebud Sioux reservations. Judge Roberto A. Lange sentenced Sarah Jahner Clifford to 19 years and seven months in federal prison, followed by five years of supervised release, a $1,00…