The DOJ does have a civil rights division that investigates issues in state and local law enforcement agencies. But politicians seem to have no taste for proper

The DOJ does have a civil rights division that investigates issues in state and local law enforcement agencies. But politicians seem to have no taste for proper oversight of the federal law enforcement agencies. For example, Biden's Director of National Intelligence Avril Haines shielded CIA agents who hacked Senate Intelligence Committee computers. The hacking occurred while the Senate Intelligence Committee was attempting to perform oversight of the CIA's use of torture.