US says 431 children couldn’t be reunited by Thursday’s deadline because their parents were no longer in the country.

About 1,800 children of the more than 2,500 separated from their parents at the US-Mexican border have been reunited with their families, the US government said in a court filing on Thursday.

This included about 1,442 children who were returned to parents who were in US Immigration Customs Enforcement custody, and another 378 who were released under a variety of other circumstances.

Government lawyers said 711 other children were not eligible for reunification with their parents by Thursday’s deadline, which was set by a federal judge in San Diego. In 431 of these cases, the families could not be reunited because the parents were no longer in the United States.

The parents and children were separated as part of President Donald Trump‘s “zero tolerance” policy towards immigration.

The American Civil Liberties Union (ACLU), which brought the case against the government, said in Thursday’s court filing that data showed “dozens of separated children still have not been matched to a parent”.

ACLU lawyer Lee Gelernt accused the government in a statement of “picking and choosing who is eligible for reunification” and said it would “hold the government accountable and get these families back together”.

‘It was a lie’

In a call with journalists after the court filing, US Department of Health and Human Services official Chris Meekins said it was awaiting guidance from the court about how to proceed with the children of 431 parents no longer in the US. The Office of Refugee Resettlement is an agency of department.

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The government did not say in the call or in its court filing how many of those parents were deported.

The American Immigration Lawyers Association (AILA) submitted court documents containing testimony from parents who say they were coerced into signing off on their deportations.

“In nearly all of the cases we’ve seen, government officials used threats, false promises, misinformation and other coercive tactics,” the group’s president, Anastasia Tonello said in a statement.

“The government’s conduct calls into question whether any of these parents understood what they were agreeing to, whether they knew what was happening to their children, and whether any were given information about the legal remedies available to protect themselves against deportation.”

One immigrant, Douglas Almendarez, told Reuters news agency he believed that returning to Honduras was the only way to be reunited with his 11-year-old son.

“They told me: ‘He’s ahead of you,'” said Almendarez, 37, in the overgrown backyard of his modest soda shop several hours drive from the Honduran capital of Tegucigalpa. “It was a lie.”

The ACLU said the government has not yet provided it with information about the reunifications of children aged five to 17 with their parents, including the location and timing of them.

“This information is critical both to ensure that these reunifications have, in fact, taken place and to enable class counsel to arrange for legal and other services for the reunited families,’ it said.

Lost in a ‘black hole’

Immigration advocates said the government’s push to meet the court’s deadline to reunite families was marred by confusion.

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Maria Odom, vice president of legal services for Kids in Need of Defense, said two children the group represented were sent from New York to Texas to be reunited with their mother. When they arrived, they learned their mother had already been deported, Odom told reporters during a conference call.

Odom said her group does not know where the children, aged 9 and 14, have been taken.

It was an example, she said, “of how impossible it is to track these children once they are placed in the black hole of reunification”.

The US Department of Homeland Security did not immediately respond to a request for comment.

An outcry at home and abroad forced US President Donald Trump to order a halt to the separations in June. Judge Dana Sabraw in San Diego ordered the government to reunite the families and set Thursday as the deadline.

But the pace has been slow; children and parents are being housed in different parts of the country, while many adults have been deported.

Sabraw has criticised some aspects of the process, but in recent days, he has praised government efforts.

The ACLU and government lawyers will return to court on Friday to discuss how to proceed.