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," 🚫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