The prime directive of the FBI is to defend the Deep State/The Swamp/The Beast (3 names for the same entity). That’s all it is...the national police force of the permanent government.
The FIB is now the Star Chamber of the Demonicrat kakistocracy.
Reminds me of an Auden epigram (IIRC):
“Victorious over the foreign tyrant,
the patriots retained his emergency
police regulations, devised to suppress them”