A senior Justice Department immigration lawyer was put on indefinite leave Saturday after questioning the Trump administration’s decision to deport a Maryland man to El Salvador — one day after representing the government in court.

Deputy Attorney General Todd Blanche suspended Erez Reuveni, the acting deputy director of the department’s immigration litigation division, for failing to “follow a directive from your superiors,” according to a letter sent to Mr. Reuveni and obtained by The New York Times.

Mr. Reuveni — who was praised as a “top-notched” prosecutor by his superiors in an email announcing his promotion two weeks ago — is the latest career official to be suspended, demoted, transferred or fired for refusing to comply with a directive from President Trump’s appointees to take actions they deem improper or unethical.

“At my direction, every Department of Justice attorney is required to zealously advocate on behalf of the United States,” Attorney General Pam Bondi wrote in a statement sent to The Times on Saturday. “Any attorney who fails to abide by this direction will face consequences.”

Under questioning by a federal judge on Friday, Mr. Reuveni conceded that the deportation last month of Kilmar Armando Abrego Garcia, who had a court order allowing him to stay in the United States, should never have taken place. Mr. Reuveni also said he had been frustrated when the case landed on his desk.

Mr. Reuveni, a respected 15-year veteran of the immigration division, asked the judge for 24 hours to persuade his “client,” the Trump administration, to begin the process of retrieving and repatriating Mr. Abrego Garcia.

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