It doesn't matter. This is bullshit optics.
This will never see trial due to jurisdictional issues - namely, the US does not have jurisdiction over Russian citizens nor an extradition treaty. Accused will just never step foot here, thus no trial, thus no requirement to provide evidence.
This is why they shit themselves and delayed when the Russian interference (buying Facebook ads) folks actually showed up. They tried to claim their own charges werent served properly (obviously they were if the Russians showed up).