Rep. Mike Waltz (R., Fla.), whom President-elect Trump has picked to serve as his national security adviser, has resigned from Congress. A former Green Beret, Waltz has served in the House since 2019.

Mike Waltz is officially a former Congressman. The St. Johns County Republican, who has represented Northeast Florida in Congress since 2019, resigned from office ahead of President-elect Donald Trump’s inauguration Monday.

Michael Waltz, President-elect Donald Trump's choice for national security adviser, during a deployment as a Green Beret to Afghanistan’s Tagab Valley in 2006. He was an officer in the National Guard who served in Afghanistan with the 20th Special Forces Group. (Michael Waltz via The Washington Post)

Trump tapped Waltz, a House lawmaker and former Green Beret, in the fall to serve as his national security adviser.

Rep. Mike Waltz (R-Fla.) resigned from the House on Monday morning, as he prepares to join President-elect Trump’s Cabinet as national security adviser. Waltz’s resignation was read on the House floor just over an hour before Trump was scheduled to be sworn in,

Margaret Brennan sat down with President Donald Trump's pick for his National Security Advisor, former Representative Mike Waltz, on Sunday, January 19th for an extended interview about foreign policy and national security during the second Trump presidency.