How does the 25th Amendment work? Yahoo News Explains

In the wake of the violent raid on Congress by pro-Trump rioters on Wednesday, there's speculation that Vice President Pence, along with heads of executive departments, will invoke Section 4 of the 25th Amendment to temporarily remove the president from power. Harold Hongju Koh, professor of international law at Yale Law School and author of a reader's guide to the 25th Amendment, explains how this unprecedented action might play out.