Glad ya asked. I'll tell ya.
Instead of creating a brand new MO to take Joe Biden down they are simply regurgitating what they tried doing to Hillary. Nothing new. Been there before. Heard that before. Didn't work then vis a vis Hillary (she got 3 MILLION MORE POPULAR VOTES) won't work now. We know the schtick and it's full of ick. I guess that's the best they got and so they're going with that. Again. It didn't work before but well what they he** they got nuthin' else so what are ya gonna do? Fly it up the flagpole again and see if this time someone salutes. It could happen. Anything is possible in a world where the powers that be has total power over me and thee.