This is why Bernie Sanders have not shut down his campaign, Hillary may get indicted and really bad news about her activities as Secretary of State could make her unenviable for President.
The FBI may indict Hillary for setting up a private email server and using it for top secret government matters. Then she selected emails to pass on to the FBI investigation and then wiped the server clean it of everything else, that is destroying government property, that is obstruction of justice. If she does not get indicted and becomes president this case will dog her throughout her presidency and may get indicted while president.
President Obama is tied to this case because he worked closely with her as Secretary of State knowing she is using a private email server.
Russia and others claim the have thousands of emails off her private server and have proof that she was doing corrupt deals. They could leak this information and force an indictment and could also entangle Barack Obama.
If she gets indicted Barack will pardon her. We should know something more by the end of July.