U.S. Ambassador Mike Waltz said the Trump administration demands major U.N. reforms, rejecting claims America caused the ...

In an exclusive interview, Ambassador Mike Waltz says unpaid U.S. dues aren’t behind the U.N.’s cash crunch, stressing ...

President Trump said his national security adviser, Mike Waltz, "learned a lesson" after he opened up a secret chat of Trump officials to a reporter.

U.S. Ambassador to the U.N. Mike Waltz joins ‘Fox News Sunday’ to discuss the importance of acquiring Greenland, the need for ...