Now the Republican nominee feels he has more proof that he's been right all along.
The FBI sent another letter to members of Congress on Sunday afternoon informing them that further review of Clinton emails found on Anthony Weiner's laptop didn't change their conclusion in July to clear her of criminal wrongdoing.
Trump, however, took issue with the process — after praising the FBI and Director James Comey for having taken up the review last week. The praise was a reversal from past comments painting Comey and the FBI as politically motivated in their recommendations over the summer and casting them as members of a rigged system.
More from NBC News:
"Right now, she is being protected by a rigged system. It's a totally rigged system," Trump said Sunday. "I've been saying it for a long time. You can't review 650,000 new emails in eight days. You can't do it, folks."
Not all of those emails were Clinton's, but Trump often talks about them as though they were — a line used Sunday by his campaign manager, Kellyanne Conway.