Oh yeah, there's for sure a ton of bribery and corruption stuff related to Ukraine that they could get him on if they really tried. But personally i doubt this is more than the usual partisan political theatre. It's called the uniparty for a reason, they may put on a show for the plebs but at the end of the day they stick together. If they do push Biden out it's because both parties have agreed that it's necessary for damage control, or to get an even bigger warhawk in there.