Democratic leaders of key House committees are reigniting calling for national security adviser Mike Waltz to step down.

The team led by U.S. President Donald Trump's national security adviser, Mike Waltz, set up at least 20 group chats on the ...

Sources say the national security adviser and his team made at least 20 group chats on the commercial messaging app.

In a startling revelation, National Security Adviser Mike Waltz has reportedly used his personal Gmail account for government communications, as reported by The Washington Post. This alarming ...

The report indicates a far more extensive use of the Signal app by Trump's national security team than previously reported.

WASHINGTON >> The team led by President Donald Trump’s national security adviser, Mike Waltz, set up at least 20 group chats ...

House Homeland Security Committee ranking member Bennie Thompson (D-Miss.) said that Gmail is "far less secure than Signal. Not only is it a security risk — it's another flagrant skirting of ...

Waltz’s team had set up at least 20 Signal group chats dedicated to discussing international crises, Politico reported ...