I really wish it wish it was possible to trigger a re-call vote for congress, the senate, potus, and the supreme court.
In the case of federal law enforcement, I'd recommend they be generally charged with upholding specific general orders and tactics approved by congress. Make the statute of limitations 9 years. The jury should consist of federal law enforcement for fairness. But ultimately make them accountable to a specific federal justice system like the military does. Will all the wrongs be made right in real time - no. Will there be instant justice - no. It would hold people accountable, there would be a chance for someone to go to law school to right some wrongs.