The former Trump national security adviser will be peppered with questions about Signal in his confirmation hearing for United Nations ambassador.

Former National Security Advisor Mike Waltz is poised to face members of the Senate Tuesday to get the ball rolling on his nomination to represent the U.S. at the United Nations.Waltz’s appearance before the Senate Foreign Relations Committee comes months after he exited his job at the White House amid controversy surrounding his role in a Signal group chat with other top administration officials.

I was hoping to hear from you that you had some sense of regret over sharing what was very sensitive, timely information about a military strike on a commercially available app,” Sen. Chris