Or maybe it's the investigation at the Clinton Foundation also underway by the FBI relating to 'donations' to the Foundation while she was Secretary of State and in charge of a Russian Uranium deal decision in that capacity.   Or maybe it's the other foreign donations the Clinton Foundation has accepted while she was Secretary of State.

Of course that's one of those biased stories from the New York Times and National Public Radio, so it really should be ignored.  They are obviously the 'right wing fringe' who keep accusing her of these things all the time.