NBC News
In 2004, Alexander moved to NBC News, where he has focused on international stories, such as the 2005 Iraq elections, the death of Osama bin Laden in Pakistan, and the tsunami in Indonesia. He has filed reports from Afghanistan, the Galápagos Islands, Gaza Strip, Israel, Laos, and Mexico.
Alexander's work has also included environmental reporting from the Northwest Passage in the Arctic, as well as reports on the story of his sister, Rebecca, who has Usher Syndrome, type III, a rare genetic disorder that is robbing her of her vision and her hearing.
Alexander has covered numerous breaking news events, including anchoring live coverage of the "Miracle on the Hudson" and the Virginia Tech shooting.
In 2006, Alexander was nominated for the "Outstanding Live Coverage of a Breaking News Story – Long Form" News & Documentary Emmy Award for his participation in the NBC News Special Report: The Death of Pope John Paul II (2005) news documentary. In 2010, he reported on the international controversy surrounding WikiLeaks and its founder Julian Assange. In addition to his news responsibilities, Alexander has also served as an NBC Sports host and covered the 2008 Beijing Olympic Games, 2010 Winter Olympics, 2016 Summer Olympics, and 2026 Winter Olympics.
From 2012 to March 2014, Alexander served as a White House correspondent. He covered the Presidency of Barack Obama, traveling across the world with the president. Then, from 2014 to 2016, Alexander was based in Washington, D.C. as a national correspondent, so he frequently reported from the White House. In January 2017, Alexander was once again named White House correspondent for NBC News before being named co-Chief White House correspondent in January 2021 and then Chief White House correspondent in summer 2023.
Alexander was appointed co-anchor of the Saturday edition of Today in October 2018, replacing Craig Melvin, who left his role as co-host of the Saturday morning version of Today to join the weekday edition as its news anchor. Alexander continued his role as a White House correspondent while anchoring Today on Saturdays. Additionally, he often filled in across the first three hours of Today during the week. On March 28, 2026, he announced that he was departing to spend more time with his family.
