In fresh comments to NBC News, the president is standing by National Security Advisor Mike Waltz, who allegedly admitted journalist Jeffrey Goldberg into the Signal group chat.
"Michael Waltz has learned a lesson, and he’s a good man," he says.
Trump called it a "glitch" that Goldberg was added, and said a staffer of Waltz is to blame.
Goldberg's presence in the chat had "no impact at all" on the operation, Trump adds.
