I must be missing something here, but how is the "there's no mention of Russia" defense even a thing here? The president of the United States, according to sworn testimony in a guilty plea of his former personal attorney, directed his attorney to commit a crime.
Cohen is being charged with that crime. He admitted he did it. Trump is not denying he ordered it.
This is it. Even if nothing turns up in the Mueller probe. The president is guilty of a crime.