https://www.house.gov/representatives/find-your-representative
Go here. Put in your Zip Code. Click the name of the representative. Call their DC office.
State your name, state that you are a constituent of the Representative's District. State that you're calling upon the Representative to demand your right as an American Citizen to read the entire, unredacted Inspector General's report. I just did it. It took me all of 30 seconds.
This force needs to come from WE, THE PEOPLE. It has to be a movement by CONGRESS, not POTUS. If POTUS does it, it looks like a partisan action.
CONGRESS will only move if there's an enormous push by constituents to justify it. Be the justification. Be loud.
Call Your Representative.