The No. 2 official at the Justice Department has also been temporarily put in charge of the Library of Congress, a department official said Monday.
Todd Blanche, the deputy attorney general for the past two months, is the latest Trump administration official to take on interim, but additional, leadership positions as President Trump dismisses senior agency officials.
Secretary of State Marco Rubio has a number of temporary titles, including interim national security adviser, even as he holds down a full-time job overseeing the country’s foreign policy. The F.B.I. director, Kash Patel, simultaneously supervised the Bureau of Alcohol, Tobacco, Firearms and Explosives earlier this year until he was replaced by Daniel Driscoll, the Army secretary, in April.
Mr. Blanche, who was Mr. Trump’s lead defense lawyer in his criminal trial in Manhattan last year, takes over as the acting Librarian of Congress from Carla Hayden.
Ms. Hayden, who had served in the job since 2016, was dismissed for what the White House press secretary, Karoline Leavitt, said was pushing “inappropriate books in the library for children.”
The Library of Congress functions primarily as a research facility limited to people 16 years or older, but it also has a children’s reading room.