Michael Feinberg had not been planning to leave the FBI. But on May 31, he received a phone call from his boss asking him about a personal friendship with a former FBI agent who was known for criticizing President Donald Trump. Feinberg, an assistant special agent in charge at the FBI’s field office in Norfolk, Virginia, realized right away that he was in the crosshairs of the bureau’s leadership at an unusually chaotic time. If his 15-year career at the bureau was coming to an end, he wanted to depart with at least some dignity rather than being marched out the door. By the following afternoon, he had resigned.

The FBI has long seen itself as an organization built on expertise. Its founder, J. Edgar Hoover, was an early and devoted advocate of professionalizing the government bureaucracy, to the point of mandating that agents wear a dark suit and striped tie. Now, however, the bureau is in the early stages of something like a radical deprofessionalization. The most important quality for an FBI official to have now appears to be not competence but loyalty. The exiling of Feinberg and others like him is an effort to engineer and accelerate this transformation.

Feinberg’s boss, Special Agent in Charge Dominique Evans, didn’t allege any misconduct on his part, Feinberg told me. Rather, as Feinberg set out in his resignation letter the following day, Evans explained that FBI Deputy Director Dan Bongino had found out that Feinberg had maintained a friendship with the former counterintelligence agent Peter Strzok, a longtime target of Trump’s ire. During Trump’s first term, Strzok was fired from the FBI—and became a recurring target of Fox News segments—after the Justice Department released text messages in which he’d disparaged the president. Trump has repeatedly attacked him over his work on the bureau’s 2016 investigation into Russian election interference (a topic of renewed interest for the president these days).