President-elect Donald Trump has tapped House Republican Conference chair and longtime ally Rep. Elise Stefanik, R-N.Y., to serve as ambassador to the United Nations, a Trump transition official confirmed to NBC News on Monday.

The nomination is Trump’s first Cabinet pick for his second term in the White House.

“I am honored to nominate Chairwoman Elise Stefanik to serve in my Cabinet as U.S. Ambassador to the United Nations. Elise is an incredibly strong, tough, and smart America First…