During his weekend retreat at Camp David, Biden, and his granddaughter Naomi played the racing video game, and he won. Naomi shared a video to Instagram that showed Biden competing against her on the Arcade GP DX machines, complete with chairs and steering wheels. Naomi Biden posted on Snapchat this weekend that she and her grandfather played an arcade-style game round of Mario Kart at Camp David over the weekend — and that he won. “Secret Service made an exception and let him drive himself!” Naomi Biden, who is 27, wrote on the photo, adding: “A little rusty but he...