The request came after President Trump and several of his top aides had attacked Mr. Abrego Garcia as a threat, even though federal judges have ruled that he is not a danger to the public.
The request is another possible path for the Salvadoran man, who has already been deported and returned by the Trump administration, to remain in the country.
It was a sharp rebuke to the prosecutors who were assigned to bring charges against those arrested after President Trump’s deployment of National Guard troops and federal agents to Washington.