There is no external power to call on. The Dems run the White House and Congress (certainly they run the House). The desire for nonpartisan referees and independent commissions and blahblahblah dilutes any power and dilutes any chance of justice.
The unwillingness of the House Dems to use their powers to subpoena people and put them in jail when they lie is... I just don't know what to say about it.
It isn't just their own skins in jeopardy, it's everything.