It all comes down to the fact if the GOP did actually not conspire or Trump did not try to obstruct justice, there cannot be any evidence they did and it would not make much difference how long they investigated because they would not find anything. The attacks and anger exhibited by Trump and the frenzy in the White House is a strong indication they are guilty as sin and are desperately trying to stave off the associated criminal charges and resulting jail time.
It all comes down to the fact if the GOP did actually not conspire or Trump did not try to obstruct justice, there cannot be any evidence they did and it would not make much difference how long they investigated because they would not find anything. The attacks and anger exhibited by Trump and the frenzy in the White House is a strong indication they are guilty as sin and are desperately trying to stave off the associated criminal charges and resulting jail time.