The GOP are mostly political cowards.
I defy anyone to prove me wrong on that. Just because they want Trump not to be President and to go away, does not mean any number of GOP Senators would suddenly become brave enough to do such a brain-dead STUPID thing as to join Democrats in convicting Trump on insane charges and force him from office.
They are scared rabbits. They run for the hills, the hide, they obfuscate, they jammer on and on or they refuse to say anything - whatever means suits their purpose of the moment to be the sniveling, lily-livered COWARDS they have proven themselves to be for DECADES.