Loomer has a long history of offensive remarks, and Trump’s advisers have often worked to distance him from her, though they have been stymied by Trump himself. A widely shared clip from today’s ceremony in Manhattan shows Trump and Vice President Kamala Harris greeting each other, but in the background, fans can be heard shouting, “Woo!” Trump must have forgotten or never bothered to learn that NATO’s mutual-defense agreement has been invoked only once—when members of the alliance agreed to assist the United States after the September 11 attacks.