SIGNALGATE—An Ambassadorial Grilling

When the editor-in-chief of The Atlantic was accidentally added to a private Signal chat, chaos ensued, thrusting the Trump administration into yet another scandal.

At a Glance

Mike Waltz, Trump’s nominee for U.S. ambassador to the UN, has faced intense backlash over a leaked Signal chat.
Top officials discussed military strikes against Yemen’s Houthis in the message thread, which mistakenly included a journalist.
Democratic Senators were fiercely critical of Waltz’s handling of sensitive information during his confirmation hearing.
The Senate Foreign Relations Committee is now deliberating on Waltz’s confirmation.

‘Signalgate’ Explodes in Confirmation Hearing

The fiasco dubbed “Signalgate” erupted in March 2025 when Jeffrey Goldberg, editor-in-chief of The Atlantic, was accidentally added to a Signal chat by then-National Security Advisor Mike Waltz. The chat was being used by senior Trump administration officials to discuss impending military strikes on Houthi targets in Yemen.

The blunder sparked bipartisan alarm over the use of nonsecure platforms for sensitive government communications. On Tuesday, July 15, the controversy took center stage as Waltz faced a grilling from the Senate Foreign Relations Committee during his confirmation hearing to become the U.S. ambassador to the United Nations.

A Grilling on the Hill

Democratic Senators on the committee did not hold back. Senator Chris Coons of Delaware pressed Waltz on his judgment, stating, “I was hoping to hear from you that you had some sense of regret over sharing what was very sensitive, timely information about a military strike on a commercially available app.”

Senator Cory Booker of New Jersey was even more blunt, accusing Waltz of “profound cowardice” for his handling of the fallout. Waltz defended himself, insisting that no “classified” information was shared and that the White House had conducted an investigation and taken no disciplinary action against him.

A Crisis of Competence

The scandal leaves a critical U.N. ambassador post vacant, a position that has been open for months after Rep. Elise Stefanik withdrew her nomination in March over concerns about the GOP’s thin House majority.

The “Signalgate” debacle has put the Trump administration’s approach to national security under a harsh spotlight. While Waltz’s confirmation is still likely to advance out of the Republican-controlled committee, the incident has raised serious questions about the competence and judgment of the administration’s top national security officials.