Waltz was removed as national security adviser in May — replaced by Secretary of State Marco Rubio — and nominated for the U.N. role.

Mike Waltz echoed the priorities of his bosses, President Trump and Secretary of State Marco Rubio, of pursuing major reforms ...

Former national security adviser Mike Waltz will testified before the Senate on Tuesday on his nomination for U.S. ambassador ...

The former Republican congressman's confirmation hearing will take place before the Senate Foreign Relations Committee.