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 ...

President Donald Trump’s administration proposed revoking a scientific finding that has long been the central basis for U.S.

Defense Secretary Hegseth's chief spokesman Sean Parnell called the Pentagon investigation into the secretary’s use of Signal ...

As a Republican, we always like to stand up for what’s right and to play by the rules,” Putnam County Legislator Paul Jonke, ...

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.' ...

The reporting that the information Hegseth is accused of sharing on the chat came from a file marked “SECRET/NOFORN” is at ...

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.