 President Biden hosting NATO leaders in Washington, D.C. in celebration of the alliance's 75th anniversary. Everything he says and does has been under intense scrutiny ever since that debate performance. ABC's Karen Travers with more and with Brad Milkey. He was doing it in a grand fashion by holding this event in the Mellon Auditorium, which is where the NATO charter was actually signed back in 1949. So there's a lot of symbolism to doing it in that room.