The White House considers the Signal chat leak case “closed,” Press Secretary Karoline Leavitt told the media March 31, 2025, while reiterating President Donald Trump’s support of National Security Advisor Mike Waltz. The White House considers the Signal chat leak case “closed,” Press Secretary Karoline Leavitt told the media March 31, 2025, while reiterating President Donald Trump’s support of National Security Advisor Mike Waltz.