The 129 pages from the 2001 investigation are heavily redacted. At the time of the pardon, Rich was an international fugitive who had fled to Switzerland. His ex-wife had donated to the Democratic National Committee, the Clinton Presidential Library and Hillary Clinton's New York Senate campaign, raising suspicion about the pardon. The federal investigation was closed in 2005 without charges, and Rich died in 2013.

Clinton's former White House chief of staff, John Podesta, is now his wife's campaign chairman. He testified before Congress that White House aides had urged Clinton not to pardon Rich. Former Obama Attorney General Eric Holder was then a deputy attorney general and was advising Clinton on pardons.

There is a connection between Comey and Rich, too. AsBloomberg Politics noted, Comey was the prosecutor in the case against Rich from 1987 until 1993, and then also took over the investigation into President Clinton's pardon in 2002 when he was the U.S. attorney for Manhattan. In a 2008 letter, Comey wrote he was "stunned" by the Rich pardon.

On Sunday, the FBI also tweeted out eight pages of documents related to GOP nominee Donald Trump's late father, Fred. They pertained to a tax case he once testified in and several real estate deals.