Donald Trump proposed a temporary ban on all Muslims entering the U.S. should he be elected president, but he might have at least one name on his list of exceptions: Sadiq Khan, the new mayor of London. “There will always be exceptions,” Trump said on Monday, according to the New York Times. “I was happy to see that [he was elected] … Because I think if he does a great job, it will really—you lead by example, always lead by example. If he does a good job and frankly if he does a great job, that would be a terrific...