After Biden's vow to choose a woman as his vice presidential nominee, many have speculated who it would be. As of August 12, 2020, there is no longer need any need for speculation; the only one of the three to be a standing senator, Kamala Harris, has been chosen and she may be the worst choice Biden could have made.
Just to be clear, there was no evidence found that Trump or the Trump campaign colluded with Russia. Furthermore, Mueller came to no conclusion on whether the President obstructed justice. Barr interpreted the findings and concluded that there was not enough evidence to prosecute the President on this charge.