In the wake of the deaths of two migrant children, outgoing White House chief of staff John Kelly blamed former Attorney General Jeff Sessions for the policy that separated children from their parents at the border. “What happened was Jeff Sessions, he was the one that instituted the zero-tolerance process on the border that resulted in both people being detained and the family separation,” Kelly told the Los Angeles Times in an interview published Sunday. “He surprised us.” Sessions, who President Trump fired after the midterm elections in November, announced the zero-tolerance policy in May, saying it would act as...