David Axelrod actually said...

Well, I've been involved in four presidential campaigns. And trust me, we were never approached by agents for Russia offering up information...

I don't think that Pres. Trump has the personal investment in this issue or the knowledge of the issue that Barack Obama did.

That's just plain stupid and so they want to deal with Mike Pence who's a more sophisticated politician and understands these basic elements...

None of that is proof of anything, but it certainly raises a lot of suspicion.