The United Nations needs reform and the United States must have a strong voice to counter China, Mike Waltz, U.S. President Donald Trump's pick to be his U.N. envoy, said on Tuesday, adding that he is "confident we can make the U.

Former national security adviser Mike Waltz will testify before the Senate on Friday morning on his nomination for U.S. ambassador to the United Nations. Waltz, who left his previous post in May after controversy surrounding the Trump administration’s use of the Signal messing app,