Today US President Donald Trump ended a Bill Clinton era policy separating children from their adult family members when those adults are determined to have been entering the United States without legal authorization (archived). Since a 1997 settlement entered into by the Clinton administration disallowed holding children in "immigration jails" for more than 20 days, children have been separated from their families and moved to separate facilities run by the US Department of "Health and Human Services". Those facilities for detaining children while jail-like are simply not called "immigration jails" to comply with terms of the settlement.
In the past weeks this 21 year old policy decision undone today by President Trump's executive order has becoming an increasingly loud propaganda point for pansuitist social engineers that painted the Bill Clinton family separation policy as a Trump policy.
As a result of Trump's executive order children will still be detained, but with their families. In facilities that thanks to the 1997 settlement are still likely to be referred to as something other as "immigration jails".