About this whole Biden thing having already been investigated there is new information being reported that casts doubt on Joe Biden's Ukraine story. If this is indeed legit information coming out then it would certainly be within reason for the President to make a request of the Ukrainian leader to consider re-opening the investigation concerning the Biden matter.
https://thehill.com/opinion/campaig...-memos-cast-doubt-on-joe-bidens-ukraine-story
Here's the problem with that. Trump was asking the Ukraine to investigate Biden, sending along Rudy, and offering Bill Barr up in the process. Now, I freely admit that I don't think the president is the sharpest knife in the drawer, but if there was damning information, in-house, concerning Biden you'd think that those would be the sources relied upon. That fact that this administration wanted to export the investigation makes it reasonable to believe that there's not much to it.