The Senate Ethics Committee has announced it will not act on a complaint against Sen. Cory Booker Cory Anthony BookerBipartisan praise pours in after Ginsburg's death DHS opens probe into allegations at Georgia ICE facility Democratic lawmakers call for an investigation into allegations of medical neglect at Georgia ICE facility MORE (D-N.J.), a potential 2020 White House candidate, for releasing “committee confidential” documents during the Senate confirmation hearing for then-Supreme Court nominee Brett Kavanaugh Brett Michael KavanaughProgressive group to spend M in ad campaign on Supreme Court vacancy Senate Republicans face tough decision on replacing Ginsburg Trump reacts to Ginsburg's death: 'An amazing woman who led an amazing life' MORE.

Deborah Sue Mayer, the chief counsel and staff director of the Senate Ethics Committee, informed Judicial Watch, a right-leaning government watchdog group, that “no further action is appropriate” in response to Booker’s unauthorized release of confidential documents.

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“The committee carefully evaluated the allegations in the complaint and, based on all the information before it, determined that no further action is appropriate,” she wrote.

The letter, dated Dec. 12, was in response to a Sept. 12 complaint filed by the group. Jill Farrell, a spokeswoman for Judicial Watch, said it took some time over the holidays to process the response and make it public.

Judicial Watch argued that Booker knowingly violated Senate rules when he made public documents related to Kavanaugh’s nomination that had been deemed confidential by the Senate Judiciary Committee.

Booker tweeted on Sept. 7 that he “broke committee rules by reading from ‘committee confidential’ docs” and then posted on Facebook on Sept. 9 that “the classification of many documents as ‘Committee Confidential’ is a sham.”

Booker on Sept. 6 divulged about 12 pages of emails from Kavanaugh’s time as a White House counsel related to an internal discussion on racial inequality and racial profiling.

Republican staff on the Senate Judiciary Committee, however, announced that then-Chairman Chuck Grassley Charles (Chuck) Ernest GrassleySenate Republicans face tough decision on replacing Ginsburg What Senate Republicans have said about election-year Supreme Court vacancies Biden says Ginsburg successor should be picked by candidate who wins on Nov. 3 MORE (R-Iowa) had waived the confidential restriction on the documents early that morning, calling into question whether Booker’s gambit was really all that daring.

A week later, Booker released an additional 28 confidential documents from Kavanaugh’s time with the White House counsel’s office showing his work on a controversial Bush-era judicial nominee, Charles Pickering.

The documents raised questions about whether Kavanaugh was honest when he testified before the Senate during his 2006 appellate court confirmation hearing that he was not primarily involved in pushing Pickering’s nomination.

Senate Majority Leader Mitch McConnell Addison (Mitch) Mitchell McConnellObama calls on Senate not to fill Ginsburg's vacancy until after election Planned Parenthood: 'The fate of our rights' depends on Ginsburg replacement Progressive group to spend M in ad campaign on Supreme Court vacancy MORE (R-Ky.) and then-Senate GOP Whip John Cornyn John CornynBipartisan praise pours in after Ginsburg's death Chamber of Commerce endorses McSally for reelection Airline job cuts loom in battleground states MORE (Texas) both said at the time that Booker’s conduct warranted an Ethics panel review.

Booker’s defiance of committee rules was one of the most tension-filled moments of Kavanaugh’s first appearance before the Judiciary panel and presaged the partisan battle that would unfold weeks later after Christine Blasey Ford publicly testified before the committee and accused the nominee of sexually assaulting her in high school.

Cornyn, a member of the Judiciary panel, warned that Booker could face “consequences” for violating what he called “clear rules about the discussion of confidential material.”

Other Democrats on the panel quickly rallied to Booker’s defense at the time. Sens. Dick Durbin Richard (Dick) Joseph DurbinMcConnell focuses on confirming judicial nominees with COVID-19 talks stalled Senate Republicans signal openness to working with Biden Top GOP senator calls for Biden to release list of possible Supreme Court picks MORE (D-Ill.) and Mazie Hirono Mazie Keiko HironoDemocrats unveil plan declaring racism a public health issue Overnight Defense: US, Russia trade blame over Syria incident | Pentagon calls out China's 'counterproductive' military exercises, missile test | Democrats press Esper on COVID-19 response Democrats press Esper on 'concerning' rise in Pentagon's COVID-19 cases MORE (D-Hawaii) said they would also accept any punishments handed out to Booker.

“Let’s jump into this pit together,” Durbin said.

The moment of Democratic solidarity touched Booker.

“This is about the closest I’ll probably ever have in my life to an ‘I am Spartacus’ moment,” he said, making reference to a famous scene in the 1960 movie starring Kirk Douglas in which revolting slaves try to protect their leader Spartacus by claiming to be him.

The Democratic vice chairman of the Ethics Committee, Sen. Christopher Coons Christopher (Chris) Andrew CoonsBiden promises Democratic senators help in battleground states Shakespeare Theatre Company goes virtual for 'Will on the Hill...or Won't They?' The Hill's Morning Report - Sponsored by The Air Line Pilots Association - Pence lauds Harris as 'experienced debater'; Trump, Biden diverge over debate prep MORE (Del.), is also a member of the Judiciary panel.

Spokesmen for Booker and for the Judiciary Committee Republicans did not immediately respond to a request for comment.