Stupid questions: if the GOP really thinks there's nothing to the possibility of Russian collusion with the Trump...

Stupid questions: if the GOP really thinks there's nothing to the possibility of Russian collusion with the Trump campaign, what could they possibly lose by properly investigating it and proving there was no collusion? I mean, collusion isn't even a legal thing, but it is a real issue if there was interference in our elections. How could they lose by showing Russian interference, but not collusion?

I boggle at these people, I really do.