The Trump administration has deported hundreds of migrants while refusing to reveal their identities or the evidence against them, prompting complaints from the migrants’ families and from critics who say the administration is trampling on civil liberties.

A federal judge called Trump administration arguments a “heck of a stretch” in a court hearing late Monday. The Trump administration says it has complied with a court order during its deportation of nearly 300 undocumented migrants it says are criminal members of violent gangs.