How many times has Congress held hearings,
revealed solid evidence of government officials committing crimes,
referred the crimes and the evidence to the "Justice" Department,
and nothing more ever gets done about it?
That happens because the Constitution has a flaw.
It puts the power of prosecution in the hands of the executive branch.
The chief prosecutor (the Attorney General, the Secretary over the Department of "Justice")
is appointed by the President, and confirmed by the Senate.
They will never appoint someone who is willing to prosecute THEIR crimes!
To remedy that, I propose a statute (or even a Constitutional Amendment!) such as,
"Whereas any violation of federal law by any federal official
harms the inhabitants of all of the several states,
The prosecuting agency of each of the several states
shall have jurisdiction to pursue criminal charges
against any federal official under any federal statute in federal court."