NOT KNOWN: How frequently the administration and the Defense Department use Signal for sensitive government communications, and whether those on the chat were using unauthorized personal devices ...

The messages Defense Secretary Pete Hegseth sent to a March Signal chat regarding the U.S. plans to bomb Houthi targets in ...

Organizers of a group called Fight Lawler say an aide to Rep. Mike Lawler infiltrated their Signal chat and posted 'Boo (Lawler) off the stage.' ...

Someone using the mobile phone number belonging to the New York Republican's deputy district director Erin Crowley gained entrance to a Signal chat for the Fight Lawler organization and urged ...

Mike Waltz, former Trump national security advisor, faces Senate confirmation hearing for U.N. ambassador role amidst scrutiny over Signal chat.

Former National Security Advisor Mike Waltz faced scrutiny over a Signal chat incident during his U.N. ambassador hearing before the Senate Foreign Relations Committee.

Former national security adviser Mike Waltz, removed from office amid the Signal chat controversy, spent Tuesday in the ...

Michael Waltz, the former national security adviser, doubled down on the Trump administration’s defense of a Signal group chat where senior officials discussed war plans.

Mike Waltz, Trump's former national security adviser, faced questions from Democrats on the Signal chat controversy Tuesday in confirmation hearing for U.N. ambassador.

Former national security adviser Mike Waltz, removed from office amid the Signal chat controversy, spent Tuesday in the Senate confirmation hearing for his nomination as U.S. ambassador to the U.N.

President Trump’s former national security adviser, Mike Waltz, emerged Tuesday from a Senate confirmation hearing largely unscathed over his role in mistakenly adding a journalist to a group ...