Rep. Elise Stefanik opened her confirmation hearing Tuesday for U.S. ambassador to the United Nations by pledging to implement President Donald Trump’s “America First” mandate and roll out a review of U.

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.

Rep. Elise Stefanik is expected to champion President-elect Donald Trump's "America first" agenda on the global stage.

President Donald Trump unveiled a massive $500 billion plan to build up artificial intelligence projects in the United States. The project called 'Stargate' will also create an estimated over 100,000 jobs. The first full day of his second term was jam-packed as he hit the ground running to implement his America First agenda.

Sen. Jeanne Shaheen questioned President Donald Trump's nominee for U.N. ambassador, Elise Stefanik, during her confirmation hearing Tuesday.

Tuesday marks President Donald Trump's first full day in office. Keep up with the USA TODAY Network's coverage of his top priorities for Americans.

Trump’s administration is directing that all federal diversity, equity and inclusion staff be put on paid leave, and that agencies develop plans to lay them off, according to a memo from the Office of Personnel Management.

In an address Tuesday afternoon, Trump announced a new partnership investing $500 billion in artificial intelligence. OpenAI, Oracle and Softbank are creating a joint venture called Stargate, the president announced.

Plus: Jan. 6 defendants go free as Dems, GOP debate pardons{beacon} Evening Report © Chip Somodevilla/Getty Images Trump seeks to undo Biden’s legacy PRESIDENT TRUMP IS MOVING QUICKLY

Donald Trump took the Oath of Office and was sworn in as the 47th President of the United States. He is only the second man in the nation’s history to return to the Oval Office after a hiatus. He has promised to "act with historic speed" – and on his first day in office,

Though Trump started off his first full day as president by unceremoniously firing four prominent appointees from Biden’s administration, several of them pushed back on his characterization of events.