In the long and tangled relationship between law and political power, a senior federal prosecutor has stepped away from leading an investigation into Donald Trump's political opponents, leaving the probe's future uncertain. The resignation, reported by Reuters this week, arrives without public explanation — a silence that itself speaks volumes in a moment when the Justice Department's handling of politically charged cases is under sustained scrutiny. History reminds us that the departure of a single figure can quietly redirect the course of consequential inquiries, and this one is no exception