LIVE: Mike Waltz to face grilling over Signal chat at Senate hearing for UN post

Watch live coverage as President Donald Trump's former national security adviser, Mike Waltz, appears before the Senate Foreign Relations Committee for a hearing on his nomination to be ambassador to the United Nations. Waltz is expected to face questions about his removal as national security adviser after he inadvertently added a journalist to a high-level Signal app discussion about military strikes in Yemen. For more context and news coverage of the most important stories of our day, click here: https:/ ...