I don’t know. But democrats spent the past 8 years accusing trump of being a russian asset, then chose not to bring it up during either impeachment, nor did biden’s justice department didn’t charge him on that front.

In practice they seem to think that delaying a weapons shipment, or not returning documents to the presidential library were stronger cases to pursue. There’s surely a reason for that.

Either the claims about russia are false, or the evidence is not actionable. I can’t think of another reasonable explanation for their actions.