Congress has no real prosecutorial function. That is the role of the Justice Department in the Executive branch of government. If it fails in its duty, which it has, the whole system of checks and balances fails and the very system of government is threatened.
There are many (including me at times) that wish Trey had a gun, handcuffs, a robe, and a prison, but he does not. While also being a frustrated Patriot, I know all he can do is make criminal referrals to an FBI and DoJ that is at least dysfunctional, and at best leaderless.