At a hearing to confirm her as the U.S. ambassador to the United Nations, Elise Stefanik vowed to represent Trump's 'America first' agenda.

President-elect Donald Trump's nominee for ambassador to the United Nations is a combative, five-term Republican congresswoman and a rising star in the MAGA movement. Rep. Elise Stefanik (R-N.Y.) denounced the U.

President-elect Donald Trump has chosen Rep. Elise Stefanik (R-N.Y.) to serve as U.S. ambassador to the United Nations. NBC News campaign embed Alex Tabet takes a look at Stefanik's career and how she might function in the Trump administration.