A federal judge says he'll order the Trump administration to provide more information about its deal to house immigrants in a prison in El Salvador.

A U.S. judge on Wednesday is due to consider whether to order Republican President Donald Trump's administration to facilitate the return to the U.S. of Venezuelan migrants detained in El Salvador, potentially opening a new front in a major challenge to Trump's aggressive deportation policy.

The Trump administration and attorneys for the U.S. Department of Justice (DOJ) have admitted that Abrego Garcia's deportation was a mistake. Despite the error, the federal government has refused to return the Maryland father of three, arguing that Abrego Garcia is in the custody of the Salvadoran government and not of the U.S.