FBI historians like myself know that, since the 1970s, bureau directors try to maintain a discrete distance from the president.
This tradition grew out of reforms that followed the often questionable behavior of former FBI Director J. Edgar Hoover, who served from 1924 to 1972.
In 1976, Congress mandated a 10-year term for FBI directors.
The Justice Department later issued guidelines on how the FBI director was to deal with the White House and the president, and how to conduct investigations.
These guidelines have been reaffirmed, revised and reissued by subsequent attorneys general, most recently in 2009.
The guidelines state, for example: “Initial communications between the Department and the White House concerning pending or contemplated criminal investigations or cases will involve only the Attorney General or the Deputy Attorney General.”
These rules were intended to ensure the integrity of criminal investigations, avoid political influence and protect both the Justice Department and president
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