Speaking at the National September 11 Memorial and Museum, Wray also made comments about the Las Vegas mass shooting.
Donations to RNC legal fund paying Russia investigation lawyers shows $193,400 from Cambridge Analytica's Mercer and wife.
The Senate Judiciary Committee had spent weeks negotiating to meet with Jim Rybicki and Carl Ghattas.
Attorney General Jeff Sessions will attend instead of the president.
Grassley said the Office of the Special Counsel had to sign nondiscolosure agreements.
It is customary for the president and former FBI directors to attend installation ceremonies.
The address was the former FBI director's second public appearance since Trump fired him in May.
Calling Weiner's downfall "indisputably sad," lawyers for the U.S. government argued that Weiner needed to go to prison because of the nature and seriousness of his crime.
Clinton made the remarks despite Comey's decision to reopen the FBI probe into her private email server during the campaign.
Comey confidant Ben Wittes said comments made by Sarah Huckabee Sanders amounted to a "disgusting abuse."
Press Secretary Sarah Huckabee Sanders defended President Donald Trump's decision to fire Comey.
The Texas Democrat, speaking on MSNBC Tuesday, said the president crossed a line.
"This is so far out of bounds it's not even in the stadium," says one former FBI official.
Senators Chuck Grassley and Lindsey Graham of the Senate Judiciary Committee detailed the information in a letter to new FBI Director Christopher Wray.
Benjamin Wittes, editor of the blog Lawfare, is challenging Trump's claim that the majority of people convicted of terrorism in the U.S. came from abroad.
The American Center for Law and Justice obtained hundreds of pages of emails between reporters and Department of Justice communications staff.
"We don't prosecute journalists for doing their jobs."
Trump tweeted in July: "Problem is that the acting head of the FBI & the person in charge of the Hillary investigation, Andrew McCabe, got $700,000 from H for wife!"
Christopher Wray was overwhelmingly voted in, winning confirmation 92-5.
"Time will tell, time will tell," Trump said on Tuesday about Sessions.
The favorable recommendation was expected as more than half of committee members had publicly expressed support for Wray.