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

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 U.S. Army post in El Paso, Texas, had more than 4,500 children as of Monday. Attorneys, 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 attorney 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 U.S. Department of Health and Human Services spokesman, Mark Weber, said the department's staff and contractors are working hard to keep children in their custody safe and healthy.

A few of the current practices are the same as those that President Joe Biden and others criticized under the Trump administration, 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 President Donald Trump.

Part of the government's plan to manage thousands of children crossing the U.S.-Mexico border involves about a dozen unlicensed emergency facilities inside military installations, stadiums and convention centers that skirt state regulations and don't require traditional legal oversight.

Inside the facilities, called Emergency Intake Sites, children aren't guaranteed access to education, recreational opportunities or legal counsel.

In a recent news release, the administration touted its "restoration of a child centered focus for unaccompanied children," and it has been sharing daily totals of the number of children in government custody as well as a few photos of the facilities. This reflects a higher level of transparency than the Trump administration. 

In addition, the amount of time children spend, on average, inside the system has dropped from four months last fall to less than a month this spring, according to the Department of Health and Human Services.

Nonetheless, the agency has received reports of abuse that resulted in a handful of contract staffers being dismissed from working at the emergency sites this year, according to an official who wasn't authorized to discuss the matter publicly and spoke on the condition of anonymity.

Attorneys say sometimes, even parents can't figure out where their children are.

José, a father who fled El Salvador after his village was targeted in a massacre, requested asylum in the U.S. four years ago. He had hoped to welcome his wife and 8-year-old daughter to Southern California this year, but the pair were turned around at the border in March and expelled to Mexico. The little girl crossed again by herself and was placed in the government shelter in Brownsville, Texas, on April 6. José called a government hotline set up for parents seeking their migrant children repeatedly but said no one would tell him where she was.

"I was so upset because I kept calling and calling and no one would tell me any information about where she was," said José, who asked to be identified only by his first name out of fear of endangering his immigration case. "Finally they told me I had to pay $1,300 to cover her airplane ticket and if I didn't pay, I would have to wait a month more, and I was so anxious."

For nearly three weeks, his daughter was held inside the Brownsville facility before finally being released to him in late April after an advocacy organization intervened to get the government to foot the bill for her airfare, as is required by the agency.

HHS declined to say whether there are any legally enforceable standards for caring for children housed at the emergency sites or how they are being monitored. The Biden administration has allowed very limited access to news media once children are brought into facilities, citing the coronavirus pandemic and privacy restrictions.