The prosecutor who investigated and charged Donald J. Trump plans to finish his report and leave the job before he can be fired.

With President-elect Donald Trump now set to take the Oval Office again in January, special prosecutor Jack Smith, who has headed the two federal cases against Trump, will likely resign before then. People who are aware of Smith’s plans told The New York Times that he plans to finish his work before the president-elect takes office and acts on his promise to “fire him within two seconds,