The Obama administration intends to announce an ambitious plan on Thursday to overhaul the much-criticized way the nation detains immigration violators, trying to transform it from a patchwork of jail and prison cells to what its new chief called a “truly civil detention system.” Details...include reviewing the federal government’s contracts with more than 350 local jails and private prisons...One move starts immediately: the government will stop sending families to the T. Don Hutto Residential Center...run for profit by the Corrections Corporation of America under a $2.8 million-a-month federal contract...that drew an American Civil Liberties Union lawsuit and scathing news coverage for putting young children behind razor wire.