Did he not accept campaign contributions from someone involved with them? That associates him right there. You can't claim dirty contributors against Hillary Clinton unless you say the same about Rudy Giuliani.
Association with those CLAIMED to be associated with the Russian Mafia is far from proof. Hillary's funds can be DIRECTLY traced to criminal givers some of whom have been CONVICTED or who have fled the country or who have CONFESSED to such activity.
NO politician has all Pure as the driven snow contributions. But claiming an "association" requires more proof than dubious contributions.