A debate is going on over the operation of immigration detention centers. Georgia’s Stewart Detention Center in Lumpkin is one of the largest in the country. It is run by a private company. There are many like it. Critics say those private facilities are problematic. Last year, a Homeland Security Advisory Council said they should be phased out. However, a separate subcommittee wants to continue using private immigrant detention facilities, but that committee wants greater oversight. We talk