The state's Work Ethic Camp in McCook, Neb., has become a detention center for migrants facing deportation proceedings. (Cindy Gonzalez/Nebraska Examiner)LINCOLN — A Nebraska lawmaker’s second visit to a state-owned prison in McCook serving as an ICE detention hub ended Friday with mixed reactions. State Sen. Margo Juarez of Omaha, whose district is a nearly five-hour drive from the town of about 7,200 residents, said she was “relieved” to see a…