Marine Corps Gen. John Kelly, commander of the U.S. Southern Command, predicted last week that the Ebola virus will not be contained in West Africa, and if infected people flee those countries and spread the disease to Central and South America, it could cause “mass migration into the United States” of those seeking treatment. “If it breaks out, it’s literally, ‘Katie bar the door,’ and there will be mass migration into the United States,” Kelly said in remarks to the National Defense University on Tuesday. “They will run away from Ebola, or if they suspect they are infected, they will...