The Biden administration is holding tens of thousands of asylum-seeking children in an opaque network of some 200 facilities that spans two dozen states and includes five shelters with more than 1,000 children packed inside, according to the Associated Press news agency.

Confidential data obtained by the AP shows the number of migrant children in government custody more than doubled in the past two months, and this week the federal government was housing around 21,000 kids, from toddlers to teens.

A facility at Fort Bliss, a US Army post in El Paso, Texas, had more than 4,500 children as of Monday.

Lawyers, advocates and mental health experts say that while some shelters are safe and provide adequate care, others are endangering children’s health and safety.

“It’s almost like ‘Groundhog Day,’” said Southern Poverty Law Center lawyer Luz Lopez, referring to the 1993 film in which events appear to be continually repeating.

“Here we are back to a point almost where we started, where the government is using taxpayer money to build large holding facilities … for children instead of using that money to find ways to more quickly reunite children with their sponsors.”

A few of the current practices are the same as those that President Joe Biden and others criticised under the administration of former president Donald Trump, including not vetting some caregivers with full FBI fingerprint background checks.

At the same time, court records show the Biden administration is working to settle several multimillion-dollar lawsuits that claim migrant children were abused in shelters under Trump.

Part of the government’s plan to manage thousands of children crossing the US-Mexico border involves about a dozen unlicensed emergency facilities inside military installations, stadiums and convention centres that skirt state regulations and do not require traditional legal oversight.

Read the full article about US treatment of migrant children at Aljazeera.