To the Editor:

Undercutting the credibility of the Justice Department, and the work of the Federal Bureau of Investigation, has grave consequences, not least the harm it does to the administration of the federal criminal justice system.

Accordingly, “Sessions Silent as Trump Attacks His Department, Risking Its Autonomy” (news article, Feb. 5) prompts me to share my experiences working in the department and with many F.B.I. field agents.