Sen. Cory Booker, D-N.J., accused former National Security Advisor Mike Waltz of displaying "profound cowardice" at Waltz’s confirmation hearing to represent the U.S. at the U.N. Tuesday, amid questions about Waltz's role in the Signal group chat that Waltz’s team had set up to discuss strikes against the Houthis in March.
Booker, who refused to ask Waltz any questions, said that Waltz failed to take accountability when other lawmakers on the Senate Foreign Relations Committee asked him about what has been called "Signalgate."
While members of the Trump administration have said no classified information was disclosed in the chat, which mistakenly included a journalist, Democrats have claimed that certain details were classified and jeopardized the safety of the troops involved in the strikes.
"It compounds what I think is disqualifying about you for this position. It also, to me, just shows profound cowardice," Booker said. "You should step up right now."
"I just watched with great disappointment that even after weeks, if not months of reflection, you couldn't sit before this committee and take some responsibility and talk constructively about what's learned," Booker said.
Waltz faced questions earlier from Sens. Chris Coons, D-Conn, and Tim Kaine, D-Va., on his involvement in the group chat, where a journalist from the Atlantic was included along with other top administration officials such as Vice President JD Vance, Secretary of State Marco Rubio and Secretary of Defense Pete Hegseth.
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Sen. Cory Booker (D-N.J.) and Sen. Bill Hagerty (R-Tenn.) speak during a confirmation hearing before the Senate Committee on Foreign Relations in the Dirksen Senate Office Building on July 15, 2025, in Washington.
During their questioning, Waltz maintained that no classified information was shared in the group chat, and said that no disciplinary action was taken following a White House investigation. The Pentagon’s inspector general’s investigation is currently ongoing.
"I have nothing but deep disappointment in what I consider a failure of leadership on your part. God, America needs now more than ever — forget the partisanship — just people to step up and show heart and integrity and honor," Booker said. "When you lie, defer, deflect, demean and degrade journalists, to me it's absolutely unacceptable. I have no questions. I cannot support your nomination. I think you've shown a failure of leadership at a time that America especially needs people of honor to stand up and show what leadership actually is."
Waltz, who before his time at the National Security Council previously served as a U.S. congressman from Florida and is a retired Army National Guard colonel and former Green Beret, challenged Booker’s statement.
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Former National Security Adviser Michael Waltz testifies during his confirmation hearing before the Senate Committee on Foreign Relations in the Dirksen Senate Office Building July 15, 2025, in Washington.
"I appreciate the men and women that I've had to lead in combat," Waltz said. "And I think the last thing they would call me as a coward."
Waltz and Hegseth both faced scrutiny for their involvement in the Signal chat that Waltz’s team created, where members of the Trump administration discussed strike plans against the Houthis.
In March, Waltz claimed he bore "full responsibility" for the Signal group chat, and the Trump administration has historically maintained no classified information was shared over the chats. The Atlantic published the full exchange of messages, which revealed that Hegseth included certain attack details such as specific aircraft and times of the strikes.
President Donald Trump announced Waltz's departure from heading up the National Security Council at the White House May 1, and hours later announced the former Florida congressman’s nomination to represent the U.S. at the U.N.
Waltz could not be reached for comment by Fox News Digital.
Former National Security Adviser Michael Waltz prepares to testify during his confirmation hearing before the Senate Committee on Foreign Relations in the Dirksen Senate Office Building July 15, 2025, in Washington.