The civil liberties organization should use its "considerable resources" to locate the parents, the government argued in a court filing. The U.S. government has deported hundreds of migrant parents without their children in the aftermath of President Trump's now-defunct family separation policy. But now administration officials are arguing that it's the responsibility of the American Civil Liberties Union, not the federal government, to find those deported mothers and fathers.

Lawyers for Juan Manuel Montes Bojorquez, 23, filed a lawsuit under the Freedom of Information Act Tuesday demanding that the federal government turn over information about his removal.