'Best outcome,' says attorney for opponents as Homeland Security promises to limit site work to security and maintenance

'No other service or provider will satisfy the agency requirement,' Department of Homeland Security says of facility housing more than 300 people

'You are simply not welcome' to work here, assemblyman says of federal government employees who are enforcing Trump administration policies

Facilities includes 'Bo' Robinson Treatment Center in Trenton, the Elizabeth Detention Center, and Delaney Hall in Newark

CoreCivic claims NJ law infringes on its right to do business