It is unclear how Waltz would approach the job. Trump’s first nominee, Rep. Elise Stefanik, had built a track record in Congress of criticizing the U.N. She vowed during her confirmation hearing in January to combat what she called antisemitism at the world body and lead a review of U.S. funding.

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,

The former Trump national security adviser will be peppered with questions about Signal in his confirmation hearing for United Nations ambassador.