https://centerforsecuritypolicy.org/take-apart-the-fbi-piece-by-piece-heres-how/
the FBI, as its name states, is only a bureaucracy. J. Edgar Hoover built that bureaucracy's brand. Once we get over the brand name and stop thinking of the Bureau as "Sacred," π«we see the emperor has NO CLOTHES
No statutory basis exists for the FBI. The FBI has no legal charter. The FBI traces its founding to a one-page attorney general memorandum from 1908.
Therefore, the FBI can be abolished by an attorney general memorandum