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.

President Trump's former national security adviser was pressed on the inclusion of a journalist on a sensitive group chat discussing war plans.