From it’s inception the FBI, under J. Edgar Hoover, scooped up dirt on the powerful as it fought domestic crime and counter espionage then used that dirt to cement it’s position as the premier Federal law enforcement agency. Loyalty to Hoover over the nation was demanded. With Obama’s Administration, Progressive Democrats morphed that demand of loyalty to demand loyalty to Progressive Democrats in and out of the Bureau as had been done at the DOJ, DOD, State Department, etc. They exist to promote Progressive success.
Odd enough, Obama is just a figurehead (like Biden). But his handlers took advantage of his administration to solidify their hold over the important institutions in America. That's why they're taking on the Supreme Court.