How many GOP Senators have signed on? How many GOP leadership people in Senate or House?
I think the answer to the first question is 1 - Cruz.
I think the answer to the second questions is 0.
The GOP is not your friend. The GOP wants Trump gone.
Plenty of them do. But not all of them. There is no shortage of corrupt republicans who have been bought by China (Cornyn, Sasse) and plenty who are just cowards continually bringing up the rear of any action. And they would love for every patriotic, truth-loving American to lose all hope, give up and resign ourselves to their inaction.
Preemptive surrender has never worked for anyone.