WASHINGTON (AP) — The U.S. government has long warned that Russian organized crime posed a threat to democratic institutions, including "criminally linked oligarchs" who might collude with the Russian government to undermine business competition.

Those concerns, ever-present if not necessarily always top priorities, are front and center once more.

An ongoing special counsel investigation is drawing attention to Russian efforts to meddle in democratic processes, the type of skullduggery that in the past has relied on hired hackers and outside criminals. It's not clear how much the investigation...