You do realize that Congress has no ability to prosecute anyone, right? All they can do is hold hearings and make the results public. If the DoJ refuses to prosecute, there is nothing Congress can do. The best they can hope to do is build a strong enough case that the public outcry will force the administration to appoint a special prosecutor.
Your point is often missed by those who either want instant results or are so steeped in defeatism that they can't conceive of anything else.
The ideal result would be for the committee to continue investigating for the remainder of this year and most of 2015 with a well researched and documented report issued in the last week of the congress with a recommendation for referral to the new (hopefully republican) justice department for prosecution. Anything concluded before then will go to the current justice department where it will be buried and forgotten.
There’s impeachment. There’s also ‘contempt of Congress’ charges Congress can make and also have the Sargent at Arms detain individuals, no?
Well they can defund them, but shucks they would be blamed for shutting the government down. Better Red than Dead I guess.