Republican presidential nominee Donald Trump repeated false conspiracy theories about childhood vaccinations during a recent call with the third-party presidential candidate Robert F. Kennedy Jr., according to a video of the call leaked Tuesday. Trump can be heard saying that, after receiving vaccines to protect infants against life-threatening diseases, "You see the baby all of a sudden starting to change radically." The clip also shows Trump telling his ostensible campaign rival, "I would love you to do something. And I think it'll be so good for you and so big for you." When Trump adds, "We're going to win" the election, Kennedy responds, "Yeah." It was not clear what Trump was suggesting Kennedy should do. A Trump campaign spokesman d