Let's summarize:
trump and his cult planned, funded, and even boasted beforehand about the January 6th attack on the US Capitol and on our democratic republic. trump and his cult watched with glee as the capitol was attacked, police were beaten, and Pence and lawmaker's lives were threatened. But soon it became apparent that their coup was not going to succeed. trump and his cult turned 180 degrees and decide it was time to stop the siege. So trump told his mob to go home and that "we love you."
At this point, the cover up began. trump, through coercion and bullying, was able to bring his cult, many of whom were actually in danger during the coup attempt, back into his fold. Suddenly the violent attack on the US Capitol became "just another Capitol tour." The repub party wants to move on, because they know the truth and facts will show them to be treasonous. The political capital that the repub should enjoy in the upcoming mid-terms will be out the window.
The repub party blocks an investigation by Congress, for the reasons I have listed able. The House forms a Select Committee which begins insuring subpoenas. The members of the trump cult ignore the subpoenas, because they are still devotees of trump...not the United States. trump is heading up the repub party just like a Mafia Boss keeps his members in line...with threats and intimidation. And since there does not seem to be any fortitude left in the repub party, there are very few who actually have the guts to stand up to him.
Now that the DOJ has stood up to the trump stone wall, the expectation is there will be people who will come forward and tell the truth and give the documents that the Committee wants. Truth and Facts are the two things that scare the repub party the most right now. But it is truth and facts that might stop trump's reign of terror on the GOP. And I do think that there are many, many in the repub party who want to return to the policies and dignity of the GOP. Maybe they are cheering for the DOJ?