Recently we got some big news: The Department of Justice will end its use of private prisons. This means that about a dozen prisons – that house about 22,000 people convicted of federal crimes – will be shut down. It’s the biggest announcement in the history of private prisons.

In light of this news, we’re revisiting an hour of Reveal that investigates medical negligence in the private prison system for immigrants. And in a new segment, we learn about the roadblocks prison regulators encountered when they tried to fix these problems.