To me, that some GOP members benefited from Dominion voting machines is the only rational explanation for why they don't investigate. Granted, there may be a level of denial as well.

That said, we know the the GA governor has, but who else. I saw somewhere good ol turtle Mitch McConnell has (and I like to know more), but there must be more, because no rational person can see what happened to Trump and be complacent about it.