During the 2016 election campaign, Bill Clinton had a long conversation with FBI director James Comey’s boss, Attorney General Loretta Lynch. Later Hillary Clinton said that, if elected, she would re-appoint Lynch.
All this immediately cast suspicion on the FBI’s investigation of Hillary Clinton’s handling of classified e-mails. Usually, when the FBI is conducting an investigation, its spokesmen say nothing until the investigation is completed, and charges are filed, or not filed.
Comey’s comments about Clinton when the FBI decided not to file charges, and his further comments, may have been an attempt to show he wasn’t a tool of Lynch or the Clintons. His motives are unknowable, of course, but that is my guess.
It didn’t work. Clinton supporters were engaged by his comments, but Trump supporters also were enraged because he didn’t charge Clinton with anything.
His disclosure that the FBI is investigating possible ties between the Trump campaign and Russian intelligence may mean as little as his disclosure of the investigation of Clinton’s e-mails. The mere fact of an investigation proves nothing. There’s no way to know until the investigation is over.