At 3 p.m. on Sunday, Jan. 3, 2021, Jeffrey Clark, the acting head of the Justice Department’s civil division and an expert in environmental law, strode into the conference room of his boss, the acting attorney general, Jeffrey A. Rosen, who had taken over weeks earlier from Mr. Barr.
Mr. Clark was there with some remarkable but by that point not entirely surprising news for Mr. Rosen: Mr. Trump had…