The site of the former Big Lots warehouse that Immigration and Customs Enforcement plans to turn into a 7,500-person detention center in Tremont, Schuylkill County, on March 12, 2026. (Photograph by Jessica Kourkounis/Pennsylvania Capital-Star)Since Immigration and Customs Enforcement appears to have abandoned plans for converting some of its new warehouses to detention facilities, many questions remain about the future of the properties. A big…