Susan Rice unmasking denial Trump gps_00000000.jpg
Susan Rice unmasking denial Trump gps_00000000.jpg
Now playing
02:41
Susan Rice denies Trump's unmasking charge
President Donald Trump addresses the 73rd session of the United Nations General Assembly, at U.N. headquarters, Tuesday, Sept. 25, 2018. (AP Photo/Richard Drew)
PHOTO: Richard Drew/AP
President Donald Trump addresses the 73rd session of the United Nations General Assembly, at U.N. headquarters, Tuesday, Sept. 25, 2018. (AP Photo/Richard Drew)
Now playing
02:17
Trump claim to world leaders met with laughter
PHOTO: CNNMoney
Now playing
06:22
How Trump's tweet sparked #WhyIDidntReport
President Donald Trump points to the crowd after speaking to law enforcement officials on the street gang MS-13, Friday, July 28, 2017, in Brentwood, N.Y.
PHOTO: Evan Vucci/AP
President Donald Trump points to the crowd after speaking to law enforcement officials on the street gang MS-13, Friday, July 28, 2017, in Brentwood, N.Y.
Now playing
01:46
Trump's I'm-joking-but-not-really strategy
WASHINGTON, DC - DECEMBER 15:  U.S. President Donald Trump listens to a question as he speaks to members of the White House Press Corps prior to his Marine One departure from the South Lawn of the White House December 15, 2017 in Washington, DC. (Alex Wong/Getty Images)
PHOTO: Alex Wong/Getty Images
WASHINGTON, DC - DECEMBER 15: U.S. President Donald Trump listens to a question as he speaks to members of the White House Press Corps prior to his Marine One departure from the South Lawn of the White House December 15, 2017 in Washington, DC. (Alex Wong/Getty Images)
Now playing
01:20
Trump often says he's 'the least racist person'
PHOTO: CNN
Now playing
01:00
Trump on Manafort: I feel sad about that
PHOTO: Pool
Now playing
01:22
Trump on Cordray: He was groomed by 'Pocahontas'
Now playing
05:58
Baldwin: This face behind Trump startled me
PHOTO: CNN
Now playing
02:01
Trump responds to op-ed: 'Gutless'
PHOTO: CNN Illustration/Getty Images
Now playing
03:18
Why Woodward's book matters
PHOTO: CNN
Now playing
01:13
Dean: Trump acts 'frighteningly dictatorial'
WASHINGTON, DC - MAY 08:  U.S. President Donald Trump announces his decision to withdraw the United States from the 2015 Iran nuclear deal in the Diplomatic Room at the White House May 8, 2018 in Washington, DC. After two and a half years of negotiations, Iran agreed in 2015 to end its nuclear program in exchange for Western countries, including the United States, lifting decades of economic sanctions. Since then international inspectors have not found any violations of the terms by Iran.  (Photo by Chip Somodevilla/Getty Images)
PHOTO: Chip Somodevilla/Getty Images North America/Getty Images
WASHINGTON, DC - MAY 08: U.S. President Donald Trump announces his decision to withdraw the United States from the 2015 Iran nuclear deal in the Diplomatic Room at the White House May 8, 2018 in Washington, DC. After two and a half years of negotiations, Iran agreed in 2015 to end its nuclear program in exchange for Western countries, including the United States, lifting decades of economic sanctions. Since then international inspectors have not found any violations of the terms by Iran. (Photo by Chip Somodevilla/Getty Images)
Now playing
02:31
Woodward book reveals 'crazytown' White House
PHOTO: CNN Illustration/Getty Images
Now playing
03:03
Trump's latest Twitter tirade lashes at media
TOPSHOT - US President Donald Trump waits to speak during a memorial service at the Pentagon for the 9/11 terrorist attacks  September 11, 2017 in Washington, DC. / AFP PHOTO / Brendan Smialowski        (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images)
PHOTO: Brendan Smialowski/AFP/Getty Images
TOPSHOT - US President Donald Trump waits to speak during a memorial service at the Pentagon for the 9/11 terrorist attacks September 11, 2017 in Washington, DC. / AFP PHOTO / Brendan Smialowski (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images)
Now playing
01:57
Trump warns of violence if GOP loses midterms
PHOTO: Photo Illustration: Getty Images/CNN Business
Now playing
01:40
Trump: Impeach somebody who's done great job?
PHOTO: Fox News Channel
Now playing
01:19
Trump on Sessions: What kind of man is this?

Story highlights

Republicans have raised concerns that Rice may have acted improperly

But GOP and Democratic lawmakers have so far found no evidence of wrongdoing, sources have said

(CNN) —  

Susan Rice, President Barack Obama’s former national security adviser, on Wednesday declined Sen. Lindsey Graham’s request to participate in a judiciary subcommittee hearing next week on Russian interference in the US election, CNN has learned.

A letter obtained exclusively by CNN from Rice’s lawyer, Kathryn Ruemmler, outlines the grounds for her decision not to appear. It was addressed to Graham, the Republican chairman of the judiciary subcommittee on crime and terrorism, which is holding the hearing, and senior Democrat Sheldon Whitehouse.

“Senator Whitehouse has informed us by letter that he did not agree to Chairman Graham’s invitation to Ambassador Rice, a significant departure from the bipartisan invitations extended to other witnesses,” Ruemmler wrote. “Under these circumstances, Ambassador Rice respectfully declines Senator Graham’s invitation to testify.”

A source familiar with Rice’s discussions told CNN that when Graham invited her, Rice believed it was a bipartisan overture and was prepared to accept. However, Whitehouse indicated to her that the invitation was made without his agreement, as he believed her presence was not relevant to the topic of the hearing, according to the source.

Rice considered the invitation a “diversionary play” to distract attention from the investigation into Russian election interference, including contacts between Trump allies and Russians during the campaign, the source said.

Whitehouse told CNN that “with the exception of that invitation, Senator Graham and I have agreed on all witnesses that have been invited to this hearing.”

He continued, “I don’t believe that Dr. Rice’s participation is germane to the topic of this hearing, and I believe her presence would be a distraction from the critical issues at hand. I fully support her decision not to testify.”

On Wednesday evening, Graham expressed concern that he learned about Rice’s decision from the press – not from the former Obama adviser herself.

“I’m disappointed,” Graham said. “I don’t know why she won’t come before the committee to tell us what she did or didn’t do. But we’ll deal with her later.”

Graham suggested that he wasn’t prepared to subpoena her yet, but said he wants to have a hearing on the issue of “unmasking” the identities of Americans caught up in surveillance reports before he votes on reauthorizing a key section of the Foreign Intelligence Surveillance Act. And he said he wants to learn what she did to unmask identities of Americans.

“I want to know about unmasking,” Graham said. “Apparently the number of unmasking requests tripled last year, versus 2015 … I want to know who can unmask an American citizen’s name whose caught up in surveillance, and what they can do with that information.”

01:01 - Source: CNN Business
Watch old photos come to life using AI
PHOTO: MyHeritage
Now playing
01:01
Watch old photos come to life using AI
PHOTO: CNN/Getty Images
Now playing
06:46
McEnany says she expected 'peaceful' rally on January 6. Keilar rolls the tape
Now playing
01:26
No, Tom Cruise isn't on TikTok. It's a deepfake
PHOTO: ABC's "Jimmy Kimmel Live
Now playing
02:02
Eddie Murphy, Arsenio Hall reunite in 'Coming 2 America'
PHOTO: Courtesy AirlingRatings.com
Now playing
03:06
Virgin Atlantic CEO: We support Covid vaccine passports
Now playing
01:19
Warren proposes wealth tax: 'It's time for them to pay a fair share'
Now playing
01:43
Marriott CEO: Vaccinations are 'the key' to travel recovery
Now playing
01:23
'There should be no threats': Biden's message to union-busters
Ashley Vanderbilt Former QAnon believer
PHOTO: CNN
Ashley Vanderbilt Former QAnon believer
Now playing
07:40
Former QAnon believer shares bonkers conspiracy theory about Biden
snl.fauci.vaccine.orig_00005420.png
snl.fauci.vaccine.orig_00005420.png
Now playing
01:24
'SNL' has 'Dr. Fauci' helping people get vaccinated