NBC News' Tom Llamas shares the history and traditions of the House sergeant at arms, the official who introduces the commander-in-chief with the iconic words, "Mister Speaker, the president of the ...

Donald Trump inauguration LIVE Updates: Donald Trump was sworn in as the 47th president of the US on Monday (Jan 20). This is Trump's second term as president. He emerged victorious in the ...

“As commander in chief, I will Kamala Harris picks up on the national security theme established earlier in the night by Sen. Mark Kelly, former CIA director Leon Panetta and others.

The President shall be Commander in Chief of the Army and Navy of the United States.... The Commander in Chief Clause assures that there can be no military force beyond the president’s control.