Last week, the White House said the National Security Council, the White House counsel office and President Trump adviser Elon Musk were all looking into the mishap. But now, that probe has wrapped

It’s a more extensive use of the app than previously reported and sheds new light on how commonly the Trump administration’s national security team relies on Signal.

When Donald Trump selected Mike Waltz to serve as national security adviser, the choice was widely seen as win-win: A combat veteran with four Bronze Stars would bring his judgment to the White House and his deep-red Florida House district was safe in Republican hands.