Unless they have a big enough majority in the Senate to convict (despite opposition from some RINOs), I'd be astonished to see the R's impeach Biden. Senate democrats WILL NOT vote to convict an impeached democrat POTUS - even one as unpopular as Biden - under any circumstance. Even if they had high definition video of Biden handing over nuclear launch codes to Swalwell's Chinese paramour (Fang Fang?) in exchange for cash while in flagrente delecto with her in a threesome with Hunter during a cocaine fueled satanic ritual that included cannibalism of kidnapped children - Senate Democrats would still vote against convicting him.
I have heard at least one R say they should impeach him for the purpose of getting all of his crimes documented and out in the open. I think that was whether or not he could be kicked out of office or not.
If they can't get the conviction, my suggestion would be to get it done, lay it all out there, and then move on. I would much rather the R's do their own Jan 6th committee and see if they can get more information out about that whole incident.
